Short Answer

The model sees potential mispricing: the outcome of Sam Altman being replaced as OpenAI CEO by a new hire is 17.5% by the model versus 33.0% by the market.

1. Market Behavior & Drivers

This market shows a general upward trend, with the probability of Sam Altman being replaced as OpenAI's CEO in 2026 rising from a starting point of 30.0% to a current price of 38.0%. The most significant event was a sharp 9.0 percentage point spike on April 27, 2026. This price increase appears to be a direct reaction to reports of Altman's dismissal around that time, which would have substantially increased the perceived likelihood of a permanent replacement within the year. Although subsequent news announced Altman's return to the CEO role, the market price has not reverted to its initial levels, suggesting some residual uncertainty among traders.
The market has traded within a defined range of 25.0% to 44.0%, establishing these levels as the current support and resistance. The total traded volume of over 11,000 contracts indicates significant interest, though recent trading activity appears lighter. The price stabilization in the high 30s, above the pre-spike level of 27.0%, suggests that while traders do not believe a replacement is the most probable outcome, the events in late April have permanently increased the perceived risk. The market sentiment, as reflected by the current 38.0% price, indicates a continued watchfulness and a belief that a leadership change before the year's end remains a notable possibility, even after Altman's reinstatement was announced.
  • Adverse legal outcomes, like Musk's lawsuit, could impact Altman's leadership.
  • OpenAI's board expressed confidence, initiating changes after November 2023 crisis.
  • Mira Murati departed OpenAI in September 2024 amidst internal tensions.
  • AI safety incidents or product delays may trigger a leadership review in 2026.
  • A successful IPO may occur by 2026, potentially impacting OpenAI's market position.
  • Market price spiked 9.0 percentage points on April 27, 2026.

Who Wins and Why

Outcome Market Model Why
Hires 33.0% 17.5% New executive hires within OpenAI may indicate a potential shift in the company's leadership structure.

Current Context

Sam Altman was confirmed as OpenAI CEO for 2026. OpenAI announced on April 28, 2026, that Sam Altman would return as CEO, days after his dismissal, indicating he was not replaced for the year 2026. This status was further supported by subsequent OpenAI posts in May 2026 [1][2].
Further reports and posts confirm Altman's continuous leadership. NPR's April 27, 2026, coverage of a court dispute between Elon Musk and Sam Altman identified Altman as OpenAI's CEO, not as an individual who had been removed or replaced earlier in 2026 [3]. Additionally, an OpenAI post dated May 6, 2026, titled "Introducing ChatGPT Futures: Class of 2026," was published under OpenAI without any indication of a CEO change from Altman's leadership at that time [2].
Sources (3)
  1. 1Sam Altman to return as OpenAI CEO, days after he was firedtimesofmalta.com
  2. 2Introducing ChatGPT Futures: Class of 2026 | OpenAIopenai.com
  3. 3Musk and Altman face off in court over future of OpenAI: NPRnpr.org

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Significant Price Movements

Notable price changes detected in the chart, along with research into what caused each movement.

📈 April 27, 2026: 9.0pp spike

Price increased from 27.0% to 36.0%

Outcome: Hires

What happened: The provided web research does not corroborate a 9.0 percentage point price spike in a prediction market regarding "Sam Altman replaced as OpenAI CEO this year?" with the outcome "Hires" on April 27, 2026. While Sam Altman was dismissed as OpenAI CEO on April 26, 2026, and an agreement for his return was announced on April 28, 2026, the specific market movement on April 27, 2026, described in the query does not match available source-backed CEO-hiring metrics [1][2]. Instead, sources for April 27, 2026, reported unrelated CEO and executive hiring stories, such as WTW appointing new AI leadership roles [3][4]. Therefore, without corroboration of the market event itself, social media or other factors cannot be identified as a primary driver; their role in the described movement is irrelevant.
Sources (4)
  1. 1OpenAI sacks ChatGPT star CEO Sam Altmantimesofmalta.com
  2. 2Sam Altman to return as OpenAI CEO, days after he was firedtimesofmalta.com
  3. 3WTW announces new leadership roles to accelerate enterpriseglobenewswire.com
  4. 4WTW names former Newfront execs to AI leadership roles - Business Insurancebusinessinsurance.com

4. Market Data

Contract Snapshot

This market resolves to "Yes" if OpenAI's CEO, including any interim CEO, changes by December 31, 2026; otherwise, it resolves to "No." The market closes on January 1, 2027, with outcomes verified by Bloomberg and OpenAI. Trading is prohibited for individuals employed by Source Agencies or those with material, non-public information related to the underlying event.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
Hires $0.36 $0.68 33%

Market Discussion

Traders are discussing whether Sam Altman will be replaced as OpenAI CEO by December 31, 2026, though the market currently leans against it. Arguments for a 'Yes' outcome include the possibility of Microsoft acquiring OpenAI, which some believe would make Altman's fundraising role redundant, or external factors such as an unspecified "trial." The opposing 'No' viewpoint is primarily expressed as a general dismissal that a change "won't happen."

5. Trust Index

Octagon Trust Index Kalshi 63 Caution

Order book is critically thin.

Primary risk· Trade quality

How it adds up
Integrity80% of score70Good

Info fairness is low (40), but Integrity averages all three scores, so the other two pull it up. Only a critically low score would cap the total.

Trade quality20% of score32High Risk

Includes the cost to trade: a $1,000 order can't be filled here because the order book is too thin.

Trust score63Caution

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity4 screens run · 3 don't apply · 3 awaiting data

6. How might the outcome of legal challenges, such as the lawsuit from Elon Musk, impact board and investor confidence in Sam Altman's leadership in 2026?

Leadership Credibility RiskSam Altman in 2026 [1]
Musk's Requested RemedyRemoval of Sam Altman from leadership roles (officer/nonprofit board director) [1][2][3]
Final Remedy DeciderJudge Yvonne Gonzalez Rogers (jury verdict is advisory) [4][3]
Adverse legal outcomes threaten Sam Altman's leadership credibility and governance. Court decisions in legal challenges, such as the lawsuit initiated by Elon Musk, could lead to direct governance disruption and pose a leadership credibility risk for Sam Altman in 2026 [1]. This litigation specifically raises concerns regarding distrust, chaos, and board confidence, all of which are critical factors influencing investor confidence [5][6]. The perceived integrity of management communications is identified as a key pathway through which these legal proceedings could impact investor trust [5][6].
Musk's lawsuit seeks Altman's removal, pending the court's final decision. Elon Musk's lawsuit explicitly requests remedies in 2026, most notably the removal of Sam Altman from his leadership positions as an officer and nonprofit board director, alongside demands for major monetary relief [1][2][3]. The ultimate impact on board and investor confidence will stem from the court's final decision, particularly concerning the granting of remedies like leadership removal and the court's characterization of responsibility [4][3]. It is important to note that while the trial's jury verdict is advisory, Judge Yvonne Gonzalez Rogers decides the final remedy [4][3].
Sources (6)
  1. 1Elon Musk seeks ouster of OpenAI CEO Sam Altman as part of lawsuitcnbc.com
  2. 2Musk and Altman face off in court over future of OpenAI: NPRnpr.org
  3. 3Elon Musk testifies in a case that could change the path of AI | CNN Businesscnn.com
  4. 4OpenAI lawsuit updates: Elon Musk v. Sam Altman trial day 2cnbc.com
  5. 5In OpenAI trial, former technology chief says Altman sowed 'chaos...reuters.com
  6. 6Elon Musk's lawsuit is putting OpenAI's safety record under the microscope | TechCrunchtechcrunch.com

7. How has the composition and power of OpenAI's board of directors evolved since the November 2023 leadership crisis, and what does this signal about their support for Altman?

Board Confidence in Sam AltmanExpressed "full confidence" in Sam Altman and Greg Brockman continuing to lead after November 2023 crisis [1]
Board ReconstitutionSam Altman rejoined the board; Sue Desmond-Hellmann, Nicole Seligman, and Fidji Simo added (March 2024) [2][3]
Foundation Board GovernanceOpenAI Foundation's board gained power to appoint and replace OpenAI Group board members (October 28, 2025) [4][5]
OpenAI's board expressed confidence and initiated immediate leadership changes following the November 2023 leadership crisis. The board announced its "full confidence" in Sam Altman and Greg Brockman to continue their leadership [1]. At this time, the board also elected three new members: Sue Desmond-Hellmann, Nicole Seligman, and Fidji Simo. Sam Altman was re-included on the board concurrently [1][6].
OpenAI's board later reconstituted, with a powerful Foundation board established. In a further evolution in March 2024, the board was reconstituted, with Altman officially rejoining [2][3]. The board at that point included Adam D’Angelo, Larry Summers, and Bret Taylor (chair), alongside the previously added Sue Desmond-Hellmann, Nicole Seligman, and Fidji Simo [2][3]. An October 28, 2025, structure update for the OpenAI Foundation governance detailed its board, which includes independent directors Bret Taylor (chair), Adam D’Angelo, Sue Desmond-Hellmann, Zico Kolter, Paul Nakasone, Adebayo Ogunlesi, Nicole Seligman, and CEO Sam Altman [4][5]. This Foundation board holds significant power, possessing the authority to appoint and replace OpenAI Group board members through special voting and governance rights [4][5].
Sources (6)
  1. 1Review completed & Altman, Brockman to continue to lead OpenAI | OpenAIopenai.com
  2. 2Sam Altman's back. Here's who's on the new OpenAI board and who's outcnbc.com
  3. 3Sam Altman rejoins OpenAI board, company adds three new memberscnbc.com
  4. 4Our structure | OpenAIopenai.com
  5. 5Our structure | OpenAIopenai.com
  6. 6OpenAI announces new members to board of directors | OpenAIopenai.com

8. How do potential internal successors at OpenAI, such as Mira Murati, compare to Sam Altman regarding technical vision, internal support, and commercial strategy?

Mira Murati's company valuation$12B [1][2][3]
Sam Altman's direct reports10 [4]
Altman replacement odds (2025-2026)0-14% [5][6][7][8]
Mira Murati transitioned from OpenAI to found a successful AI venture. Formerly OpenAI's CTO, Murati departed in September 2024 amidst internal tensions and subsequently established Thinking Machines Lab, now valued at $12 billion [1][9][2][3][10]. Although she testified about internal conflicts during her tenure, Murati ultimately supported Sam Altman's reinstatement in 2023 [9][11][12][13][14]. Her independent commercial strategy is evident in her current venture's valuation and its focus on customizable AI [1][2][3].
Greg Brockman remains a key leader, while Altman's CEO role is secure. Greg Brockman, OpenAI's President and cofounder, holds a pivotal leadership role as Sam Altman's top deputy, overseeing technical initiatives for large language models and agents [15][16][4][17][18][19]. He continues to co-lead OpenAI alongside Altman, who has 10 direct reports according to a February 2026 organizational chart [4][19]. There is no current evidence suggesting an imminent CEO change at OpenAI, with Sam Altman actively involved in 2026 announcements, including GPT-5.5 and a Microsoft partnership [20][21]. Prediction markets consistently indicate low odds, between 0% and 14%, for Altman's replacement in the 2025-2026 timeframe [5][6][7][8].
Comprehensive comparison to Altman's vision is limited by available data. The information available predominantly details Mira Murati's commercial strategy and the technical focus of both Murati and Greg Brockman. However, it does not provide sufficient data for a direct, comprehensive comparison against Sam Altman's overarching vision within OpenAI.
Sources (21)
  1. 1Thinking Machines Labthinkingmachines.ai
  2. 2Mira Murati: From OpenAI CTO to $12B AI Founderdigidai.github.io
  3. 3Former OpenAI CTO Mira Murati's $2B AI Startup Thinking Machines Lab Sets $50M Investment Minimum, Backed By Andreessen Horowitz And Sequoia Capitalfinance.yahoo.com
  4. 4Who's in Charge at OpenAI? See the Org Chart - Business Insiderbusinessinsider.com
  5. 5Sam Altman replaced as OpenAI CEO this year? Odds & Predictions 2026kalshi.com
  6. 6Sam Altman out as OpenAI CEO before July? Predictions & O... 2026 | Polymarketpolymarket.com
  7. 7Sam Altman out as OpenAI CEO before April? Predictions &... 2026 | Polymarketpolymarket.com
  8. 8Which CEOs will be gone in 2025? Predictions & Odds | Polymarketpolymarket.com
  9. 9Ex-OpenAI CTO Mira Murati Testifies Sam Altman Pit... - Forbesforbes.com
  10. 10Mira Murati: OpenAI to Thinking Machines Labconui.co
  11. 11Mira Murati: As OpenAI's former CTO Mira Murati tells court that Sam Altman sowed distrust and chaos among top executives; Tesla CEO Elon Musk openly declares: Mira is … | - The Times of Indiatimesofindia.indiatimes.com
  12. 12In OpenAI trial, former technology chief says Sam Altman sowed 'chaos,' distrust among top executives - The Hinduthehindu.com
  13. 13OpenAI Tensions Grow After Mira Murati’s Claims | EasternEyeeasterneye.biz
  14. 14Mira Murati’s deposition pulled back the curtain on Sam Altman’s ouster | The Vergetheverge.com
  15. 15OpenAI leadership team update | OpenAIopenai.com
  16. 16OpenAI President Greg Brockman: Doubling Down on Text Models, The Superapp Plan, Codex’s Potentialbigtechnology.com
  17. 17OpenAI's Leadership Shakeup: Greg Brockman Takes the Helm | Machine Briefmachinebrief.com
  18. 18Meet the power broker of the AI age: OpenAI's 'builder-in-chief' helping to turn Sam Altman's trillion-dollar data center dreams into reality | Fortunefortune.com
  19. 19Review completed & Altman, Brockman to continue to lead OpenAI | OpenAIopenai.com
  20. 20OpenAI | OpenAIopenai.com
  21. 21Sam Altman's 2026 Strategy: AGI Bets, $500B Stargate & OpenAI...useluminix.com

9. What is the timeline of key governance reforms and board member appointments at OpenAI since November 2023?

CEO Reinstatement DateNovember 29, 2023 [1]
New Board Members (March 2024)Sue Desmond-Hellmann, Nicole Seligman, Fidji Simo [2]
Structural Shift AnnouncementOctober 28, 2025 [3]
OpenAI experienced significant board changes and leadership shifts in November 2023. Sam Altman was initially removed as CEO between November 17–22, 2023, during which time Bret Taylor was appointed as the new board chair, and a new board including Larry Summers and Adam D’Angelo was established [4][1]. Altman was subsequently reinstated as CEO on November 29, 2023, with Greg Brockman as president, and Microsoft was granted a non-voting observer seat on the board as part of these developments [1].
The board expanded, and governance frameworks were strengthened by March 2024. New board members Sue Desmond-Hellmann, Nicole Seligman, and Fidji Simo were added to the Board of Directors [2]. At this time, Sam Altman was also slated to rejoin the board, alongside existing members Bret Taylor, Larry Summers, and Adam D’Angelo [2]. Further reforms included the adoption of new corporate governance guidelines, a strengthened conflict-of-interest policy, the creation of an anonymous whistleblower hotline, and the establishment of new board committees, such as a Mission & Strategy committee, to enhance the governance framework [5].
A structural reorganization established the OpenAI Foundation for long-term oversight. This structural shift, announced on October 28, 2025, rebranded the nonprofit as the OpenAI Foundation and the for-profit entity as OpenAI Group PBC [3]. The Foundation's board was defined to include Bret Taylor (Chair), Adam D’Angelo, Sue Desmond-Hellmann, Zico Kolter, Paul Nakasone, Adebayo Ogunlesi, and Nicole Seligman, with Sam Altman also serving. The Foundation holds the power to appoint and replace all directors of OpenAI Group [3]. Additionally, OpenAI's Safety and Security Committee was designated an independent Board oversight committee, chaired by Zico Kolter and including Adam D’Angelo, Paul Nakasone, and Nicole Seligman, with the authority to delay model releases if safety concerns arise [6]. As of February 16, 2026, Sam Altman continued to be recognized as OpenAI’s CEO [7].
Sources (7)
  1. 1OpenAI chaos: A timeline of Sam Altman's firing and returnaxios.com
  2. 2OpenAI announces new members to board of directors | OpenAIopenai.com
  3. 3Our structure | OpenAIopenai.com
  4. 4Sam Altman Returns as OpenAI CEO. Here’s How It Happenedtime.com
  5. 5Review completed & Altman, Brockman to continue to lead OpenAI | OpenAIopenai.com
  6. 6An update on our safety & security practices | OpenAIopenai.com
  7. 7Meet Sam Altman, OpenAI's Cofounder and CEO - Business Insiderbusinessinsider.com

10. What potential internal catalysts in 2026, such as AI safety incidents or product delays, could trigger an OpenAI board review of Sam Altman's leadership?

GPT-4 safety review concerns emergedMay 2026 [1]
CFO suggested IPO delay to2027 (May 2026) [2]
Projected cash burn for 2026$17 billion [3][2]
Internal catalysts in 2026 could trigger an OpenAI board review of Sam Altman's leadership. Concerns include AI safety incidents, reported product delays, and issues with his management style and transparency. The current OpenAI board holds significant veto powers over leadership decisions, especially concerning catastrophic risks from powerful AI models [4][5][6]. For example, allegations emerged in May 2026 that a version of GPT-4 was launched by Microsoft in India without reportedly undergoing OpenAI's internal safety review, which the board reportedly viewed as a warning sign [1]. There have been recurring concerns that OpenAI has at times prioritized rapid product development over thorough safety protocols [1][7][8][9]. These tensions were further highlighted by the departure of a major executive responsible for AGI development in June 2025 due to concerns about OpenAI's readiness for advanced AI projects [10].
Operational and financial pressures may also prompt a board review of leadership effectiveness. OpenAI's CFO, Sarah Friar, reportedly suggested in May 2026 that the company might need to delay its anticipated 2026 IPO to 2027 due to concerns about spending and readiness for public reporting standards [2]. Such a delay or significant missed revenue targets could indicate internal operational or strategic issues, particularly given projections of a $17 billion cash burn for 2026 [3][2]. Furthermore, leadership reshuffles in April 2026, including the COO shifting roles and other executives taking medical leave, could impact product development timelines and organizational stability [11][12][13][14][15].
Sam Altman's leadership style and transparency remain critical factors for board scrutiny. His initial removal in 2023 was explicitly linked to a "lack of candor" in his communications with the board [4][16][17][18]. More recently, in May 2026, testimonies from former board members and executives reiterated these concerns, describing Altman's leadership style as "divisive," creating "rivalry and tension" among senior leaders, and questioning his transparency [1][19][8][20][21]. Allegations of a "pattern of lying" and fostering a "culture of deceit" within the company were also made [1]. Renewed internal strife, significant high-profile departures, or a widespread perception among employees that the company is deviating from its core mission could put pressure on the board to intervene [10][16]. The OpenAI Foundation board, which consists of eight independent directors and Sam Altman, holds the power to appoint and replace all directors of the OpenAI Group, demonstrating a governance structure designed to maintain mission-driven oversight [5][6].
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11. What Could Change the Odds

Key Catalysts

Potential positive market catalysts for OpenAI include a successful initial public offering (IPO), with advanced discussions reportedly occurring by 2025 and an analyst suggesting an IPO could happen in 2026 due to the company's size [1][2]. Additionally, continued high-profile strategic partnerships, such as a deal with the U.S. government for classified operations in early 2026, could positively impact the company's influence and revenue [1]. However, an analyst in November 2025 raised "red flags" regarding OpenAI's financial management, noting the company was spending more than double its annual recurring revenue and projecting massive future spending, which could lead to a significant financial shortfall [2].
Leadership and internal stability are also key factors. Sam Altman was not replaced as OpenAI CEO in 2026 and continues in the role as of May 8, 2026 [3][4][1][5][6][7][8][9]. This follows a brief removal and reinstatement in November 2023 [10][11][12][13][4][14][5]. Despite this, criticisms of Altman's management style have emerged from a trial, with claims of a "culture of lying" and a lack of candor with the board [4][6][7]. Moreover, the departure of three senior executives in April 2026 could signal internal instability [1]. The company also faces intense competition, as Google's Gemini model in late 2025 prompted a "code red" response from OpenAI, and rival Anthropic reportedly surpassed OpenAI as the most-downloaded AI app in March 2026 [1][15]. Ethical concerns and public backlash, highlighted by decisions like the Pentagon deal in early 2026, could also affect public perception and investor confidence [1].

Key Dates & Catalysts

  • Expiration: January 02, 2027
  • Closes: January 01, 2027
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