Anthropic continues refining its Claude 4 model family with frequent updates, most recently announcing Claude Opus 4.8 in late May 2026, emphasizing improved honesty, tool use, and agentic capabilities like computer control. Earlier 2026 leaks pointing to a Claude Sonnet 5 release around February passed without materializing, leading instead to incremental 4.x iterations focused on reliability and enterprise features such as security scanning. This pattern aligns with Anthropic's historical approach of shipping multiple mid-tier advancements before a full generational leap, amid competition from other large language model labs prioritizing safety and real-world task performance. Traders should watch for developer conferences or API deprecations that might signal the next major version.
Polymarketデータを参照したAI生成の実験的な要約。これは取引アドバイスではなく、このマーケットの解決方法には一切関係ありません。 · 更新日Anthropic launches Claude Fable 5, first general-purpose Claude 5 model
September 30, 2026 surges to 99%26%
Anthropic officially launched Claude Fable 5 on June 9, 2026, marking the public release of the first general-purpose model in the Claude 5 series, confirming market expectations and driving prices to near certainty.
Anthropic Releases Public Version of Claude Mythos (Codenamed Mythos)
June 30, 2026 jumps to 98%6%
The public release of Claude Mythos, potentially named Claude Fable, was announced as a major leap for the industry, fulfilling the market's 'Claude 5' definition as a successor to Claude 4.
Reddit users note Claude Security public‑beta now live for Enterprise; Team and Max coming soon
June 30, 2026 jumps to 60%8%
Reddit discussion highlighted that Claude Security public‑beta was now available for Enterprise customers and that Team/Max access was “coming soon,” reinforcing the perception of a progressive public rollout that could culminate in Claude 5.
Anthropic confirms plans to roll out Mythos-class models to the public soon
June 30, 2026 surges to 93%65%
Anthropic publicly confirmed that it plans to make Mythos-class models, which are more advanced than current public models, available to all customers in the coming weeks, though no exact date was given. This statement increased market confidence that a Claude 5 or equivalent release was imminent.
Anthropic confirms elevated errors and outage across Claude AI models and services
June 30, 2026 jumps to 32%12%
Anthropic publicly acknowledged elevated error rates and service disruptions across Claude AI models, including Claude Opus 4.6 and 4.7, but continued to push forward with development and release plans.
Anthropic expands Project Glasswing access and Claude Mythos Preview
Anthropic expanded access to Claude Mythos Preview through Project Glasswing to about 150 organizations, indicating ongoing restricted rollout of advanced models but no public Claude 5 release yet.
Claude Platform adds public‑beta self‑hosted sandboxes and sets Opus 4.8 as default fast mode
June 30, 2026 rises to 93%2%
Releasebot reported that Claude Platform added a public‑beta self‑hosted sandbox capability and that Opus 4.8 was the default fast‑mode model. The broader platform enhancements were interpreted as steps toward a more open Claude 5 offering, nudging the market upward.
Anthropic's Claude platform suffers service disruption raising concerns
September 30, 2026 jumps to 69%7%
A significant service disruption affected multiple Claude models and services, raising concerns about infrastructure resilience and potential data exposure. This incident did not indicate a Claude 5 public release but may have influenced market sentiment negatively.
Anthropic announces Services Track and Partner Hub for Claude Partner Network
Anthropic announced new services and partner programs to support Claude deployments but did not announce any public release of Claude 5, maintaining the status quo on model availability.
Widespread outage impacts Claude services, raising concerns but not affecting release plans
June 30, 2026 jumps to 32%12%
Anthropic experienced a significant service disruption affecting multiple Claude models and services, but this did not materially affect the market's confidence in the upcoming Claude 5 release.
Anthropic expands Project Glasswing and confirms Mythos-class models will roll out publicly soon
Anthropic announced expansion of its cybersecurity Project Glasswing and reiterated that Mythos-class models, which are more powerful than current public models, will be made available to all customers in a matter of weeks. This indicates imminent public access to advanced models but no explicit Claude 5 branding yet.
Anthropic expands Glasswing, pledges public Mythos‑class rollout soon
June 30, 2026 surges to 91%23%
Anthropic announced an expansion of Project Glasswing, adding more partners and confirming that Mythos‑class models would be publicly available “in a matter of weeks.” This reinforced expectations of a Claude 5‑type launch before the June deadline, driving the market to over 80 % Yes.
Anthropic confidentially files for IPO, signaling corporate growth
Anthropic filed confidential paperwork with the SEC for an initial public offering, indicating growth and increased funding. While significant for the company, this event did not directly affect the Claude 5 public release timeline or market resolution.
Anthropic files confidential IPO paperwork
Anthropic filed confidential paperwork with federal regulators for an IPO, signaling corporate growth but not directly impacting Claude 5 public release expectations.
Anthropic files confidential paperwork for IPO
September 30, 2026 surges to 96%27%
Anthropic announced it had filed confidential paperwork with federal regulators to go public, signaling company growth and increased market attention but unrelated directly to Claude 5 release timing.
Anthropic confirms Mythos-class models will roll out to all customers in coming weeks
September 30, 2026 surges to 79%16%
Alongside the Opus 4.8 launch, Anthropic confirmed that Mythos-class models will be made available to all customers in the coming weeks, indicating an imminent public release of advanced models with Mythos capabilities, possibly under the Claude 5 branding. This announcement increased market confidence in a near-term release but no official Claude 5 public launch was made within the analysis window.
Anthropic confidentially files for IPO, signaling growth and future plans
Anthropic filed paperwork for an IPO, highlighting company growth and investor confidence but did not announce Claude 5 release, maintaining market uncertainty about the model's public availability.
Anthropic files confidential IPO paperwork with the SEC
June 30, 2026 jumps to 68%6%
Anthropic filed confidential paperwork for an IPO, a move that highlighted the company’s need to demonstrate a pipeline of flagship products to investors. Market participants interpreted the filing as a catalyst for an accelerated Claude 5 release, pushing Yes prices upward.
Anthropic Files Confidentially for IPO
Yes surges to 89%61%
Anthropic filed confidential paperwork with the SEC to prepare for an initial public offering. The news of the impending IPO, combined with the promised rollout of Mythos-class models, drove market confidence to near-certainty.
Anthropic files confidential IPO paperwork with US regulators
Anthropic filed confidential paperwork for an IPO, indicating strong business growth and market confidence in the company, but this event does not directly confirm Claude 5 public release.
Anthropic Releases Claude Opus 4.8 with Dynamic Workflows
June 30, 2026 dips to 16%2%
Anthropic released Claude Opus 4.8, improving speed and capability over Opus 4.7 but still without a public Claude 5 release. This led to a market reassessment and price declines for the June 30, 2026 outcome as the deadline neared.
Anthropic Launches Claude Opus 4.8 and Confirms Public Mythos-Class Rollout
Yes jumps to 28%14%
Alongside the launch of Claude Opus 4.8, Anthropic officially confirmed that Mythos-class models would roll out to all customers in the coming weeks. This major announcement sparked a massive rally in both the June and September timeline markets.
Anthropic releases Claude Opus 4.8, latest in Claude 4 family
September 30, 2026 rises to 63%3%
Anthropic launched Claude Opus 4.8, an incremental improvement over Opus 4.7, continuing the Claude 4 generation with enhanced software engineering and agentic task handling. This release reinforced that Claude 5 had not yet been publicly launched, maintaining market anticipation for a next-generation model.
Anthropic announces plans to release Mythos-class models to all customers in coming weeks
September 30, 2026 jumps to 70%5%
Anthropic confirmed that Mythos-class models, including the advanced capabilities previewed in Claude Mythos, will be made available to all customers soon, though no exact date was given. This announcement increased market optimism about a near-term public release.
Anthropic confirms plans to release Mythos-class models to the public soon
September 30, 2026 surges to 94%43%
Anthropic confirmed in late May 2026 that it plans to bring Mythos-class models to the general public after delaying rollout due to security concerns. The company expects to make these models available in the coming weeks, but no public release had occurred by June 7, 2026, so the market remained uncertain about a Claude 5 public launch by end of 2025.
Anthropic confirms public rollout of Claude Mythos-class models in coming weeks
September 30, 2026 jumps to 68%7%
Anthropic announced plans to bring Mythos-class models, currently restricted to select partners, to the general public after addressing security risks. However, no specific release date or confirmation of a Claude 5 public launch was given, maintaining market uncertainty.
Anthropic upgrades to Claude Opus 4.8 and promises Mythos‑class public rollout
June 30, 2026 jumps to 69%9%
Anthropic released Claude Opus 4.8, its newest frontier model, and simultaneously announced that Mythos‑class models would be rolled out to all customers “in the coming weeks.” The upgrade raised expectations that a named Claude 5 could appear before the market’s June deadline, causing a sharp rise in Yes odds.
Anthropic announces Claude Opus 4.8 with major capability improvements
June 30, 2026 jumps to 68%6%
Anthropic’s official blog post introduced Claude Opus 4.8, describing it as “sharper judgment, more honesty… and the ability to work independently for longer.” The release was perceived as the next major step after Opus 4.7, boosting expectations of a Claude 5 launch soon.
Anthropic reports over 10,000 critical vulnerabilities found using Claude Mythos Preview
Anthropic disclosed that its restricted Mythos Preview model identified over 10,000 critical software vulnerabilities across partner organizations, underscoring the model's power but also the reason for its restricted access and no public release yet.
Anthropic reports over 10,000 critical vulnerabilities found using Claude Mythos Preview
September 30, 2026 jumps to 72%13%
Anthropic's Project Glasswing published results showing extensive vulnerability detection using Claude Mythos Preview, reinforcing the model's advanced capabilities but also highlighting the need for further safeguards before public release. Market reacted with cautious optimism.
Anthropic expands Project Glasswing and Claude Mythos Preview access
September 30, 2026 jumps to 69%10%
Anthropic extended access to Claude Mythos Preview to about 150 organizations and launched Claude Security in public beta for enterprise customers. The company reiterated that Mythos-class models would be made publicly available only after further safety work, delaying any Claude 5 public release.
Anthropic Launches Claude Security in Public Beta for Enterprise Customers
June 30, 2026 drops to 13%8%
Anthropic launched Claude Security in public beta using Claude Opus 4.7, while stating that the more powerful Mythos-class models would remain restricted until stronger safeguards were developed. This conditional statement initially depressed immediate release expectations.
Anthropic launches Claude Security public beta for Enterprise customers
Anthropic launched Claude Security, a public beta product for code vulnerability scanning using Claude Opus 4.7, but this did not involve a public release of Claude 5. The Mythos model remains restricted to select partners.
Anthropic teases next‑gen Claude model at London developer conference
June 30, 2026 jumps to 60%5%
Anthropic hosted a developer conference in London where they teased upcoming “Claude Managed Agents” and hinted at a forthcoming flagship model. The speculation spurred a modest rise in Yes odds in the preceding week.
Anthropic releases Claude Opus 4.7, latest publicly available model
September 30, 2026 surges to 94%43%
Anthropic released Claude Opus 4.7, the most capable publicly available model at the time, reinforcing the absence of a Claude 5 public launch and affecting market confidence in a near-term Claude 5 release.
Anthropic resets Claude Code rate limits and expands usage
September 30, 2026 jumps to 67%8%
Anthropic reset the 5-hour and weekly usage counters for Claude Code, increasing capacity for Pro, Max, Team, and Enterprise plans. This operational update improved user experience but did not indicate a new model release, causing minor market fluctuations.
Anthropic changes Claude subscription usage plans affecting developer access
June 30, 2026 drops to 19%7%
Anthropic announced a split in Claude subscription credits starting June 15, separating interactive and programmatic usage, impacting developers using Claude Code and third-party agents. This operational update indicated ongoing development and deployment of Claude 4 models but did not signal a Claude 5 public release.
Anthropic says Mythos‑class models will be public in coming weeks
June 30, 2026 jumps to 28%6%
Anthropic confirmed that the Mythos‑class models would be public “in the coming weeks,” a statement that directly addressed market speculation about a Claude 5 release before the June deadline, resulting in a notable price increase.
Prediction market price for Claude 5 release surges from 51% to 94%
September 30, 2026 surges to 94%43%
Market prices surged sharply as rumors and leaks about the imminent release of Claude 5 intensified, reflecting growing confidence in a public launch within the near term.
Anthropic releases Claude Opus 4.7 and launches Claude Design product
September 30, 2026 surges to 94%43%
Anthropic released Claude Opus 4.7 and introduced Claude Design, enhancing collaboration features but did not announce Claude 5. This release caused a spike in market confidence about imminent new models but no confirmation of Claude 5 availability.
Claude Opus 4.8 released with Mythos-level alignment and speed improvements
September 30, 2026 surges to 94%43%
Anthropic released Claude Opus 4.8, a faster and more aligned model with performance comparable to the restricted Claude Mythos Preview, signaling readiness for broader rollout of advanced AI capabilities. This boosted market confidence significantly.
Anthropic launches Claude Security public beta for Enterprise customers
September 30, 2026 jumps to 70%7%
Anthropic launched Claude Security, a public beta product using Opus 4.7 for code vulnerability scanning, signaling focus on specialized models rather than a public Claude 5 release.
Anthropic launches Claude Security public‑beta for Enterprise customers
June 30, 2026 drops to 12%13%
Anthropic announced that Claude Security moved from a limited research preview into a public‑beta offering for all Claude Enterprise customers. The announcement signaled a broadened public rollout of a new Claude‑related product, which lifted market confidence that a major Claude 5‑type launch might be imminent.
Anthropic launches Claude Security public beta for Enterprise customers
September 30, 2026 jumps to 25%5%
Anthropic moved Claude Security, a code vulnerability scanning and patching tool running on Opus 4.7, into public beta for Enterprise customers, showing product advancement but not a Claude 5 public release, influencing market sentiment.
Anthropic expands Claude Mythos access to ~150 new organizations
June 30, 2026 drops to 15%6%
A follow‑up note mentioned that access to Claude Mythos would be extended to about 150 organizations, hinting at a broader rollout. The incremental expansion caused a temporary dip in Yes odds as the market reassessed the timeline.
Anthropic Launches Claude Design Powered by Claude Opus 4.7
June 30, 2026 drops to 14%6%
Anthropic released Claude Opus 4.7 alongside a new visual collaboration tool called Claude Design. The release of another minor version update rather than a major next-generation model reinforced expectations that Claude 5 was not imminent.
Anthropic launches Claude Opus 4.7 and Claude Design product
September 30, 2026 surges to 94%43%
Anthropic released Claude Opus 4.7 and a new product, Claude Design, enhancing capabilities but not announcing Claude 5. This reinforced the view that Claude 5 was not imminent.
Anthropic releases Claude Opus 4.7 with sharper coding and 3x vision resolution
Anthropic released Claude Opus 4.7 on April 16, 2026, focusing on advanced software engineering capabilities and improved image processing. This upgrade reinforced Anthropic's leadership in AI model development and likely boosted market optimism.
Anthropic launches Claude Opus 4.7, latest model in Claude 4 family
September 30, 2026 surges to 94%43%
Anthropic released Claude Opus 4.7, an improved model within the Claude 4 generation, available across all Claude products and major cloud platforms. This update indicated continued development within the Claude 4 line rather than a new Claude 5 release, influencing market sentiment towards a delayed Claude 5 launch.
Anthropic releases Claude Opus 4.7, confirming it is less capable than Mythos
Anthropic released Claude Opus 4.7, an upgrade to Opus 4.6 with improved coding, vision, and agentic task performance, but explicitly stated it is less broadly capable than the unreleased Claude Mythos Preview. This reinforced the market view that the next major public release (potentially Claude 5) had not yet occurred.
Anthropic announces Claude Mythos Preview with restricted access
June 30, 2026 plunges to 34%36%
Anthropic announced the Claude Mythos Preview model, a more powerful successor to Opus 4.7, but access is limited to select partners due to cybersecurity risks, indicating no broad public release yet.
Anthropic unveils Claude Mythos Preview, a highly capable cybersecurity model
June 30, 2026 jumps to 34%7%
Anthropic disclosed the “Claude Mythos Preview” in a blog post, noting that the model surpassed most humans at code‑vulnerability discovery. The preview’s limited rollout generated speculation that a full public release (potentially branded Claude 5) could arrive before June, pushing odds higher.
Anthropic announces Project Glasswing and Claude Mythos Preview with restricted access
Anthropic announced Project Glasswing and the Claude Mythos Preview model, which is more powerful than Opus 4.7 but limited to 12 launch partners and about 40 critical infrastructure organizations due to cybersecurity risks. This restricted access indicated that a public Claude 5 release was not imminent.
Anthropic Announces Claude Mythos Preview and Project Glasswing
Yes surges to 96%46%
Anthropic revealed Claude Mythos Preview, a more capable model than Claude 4, and expanded Project Glasswing for code security, signaling a major internal Claude 5 development effort.
Anthropic officially announces Claude Mythos Preview and Project Glasswing
June 30, 2026 surges to 79%24%
Anthropic publicly announced Claude Mythos Preview, its most powerful AI model with advanced cybersecurity capabilities, and launched Project Glasswing, a consortium of select partners with exclusive access to Mythos for defensive cybersecurity work. The company stated it will not release Mythos publicly due to dual-use risks, signaling that Claude 5 as a public product is not yet available.
Anthropic announces Project Glasswing and Claude Mythos Preview
June 30, 2026 surges to 78%19%
Anthropic announced Project Glasswing and the Claude Mythos Preview model, available only to select partners, indicating advanced development beyond current public models and fueling speculation about Claude 5.
Anthropic ships Claude Opus 4.6 and Sonnet 4.6 but no official Claude 5 release
June 30, 2026 jumps to 56%6%
Anthropic publicly released Claude Opus 4.6 and Sonnet 4.6 models but has not announced any model officially named Claude 5, maintaining uncertainty about the next major release. This contributed to initial market price fluctuations as anticipation for Claude 5 remained speculative.
Anthropic confirms no public release of Claude 5 yet
As of March 31, 2026, Anthropic had publicly shipped Claude Opus 4.6 and Sonnet 4.6 but had not announced or released a model officially named Claude 5, tempering market expectations for an imminent public launch.
No public Claude 5 release announced; Anthropic shipping Claude 4.6 models
As of late March 2026, Anthropic had publicly released Claude Opus 4.6 and Sonnet 4.6 but had not announced any model named Claude 5. This absence of a public release contributed to market uncertainty about Claude 5 availability by the end of 2025.
Prediction markets begin pricing in Claude 5 release in Q2–Q3 2026
June 30, 2026 jumps to 59%9%
Market participants started to price in the likelihood of a Claude 5 release based on Anthropic's shipping cadence and internal model codenames like Mythos, despite no official announcement. This set the initial baseline for the market's upward movement.
Data leak exposes internal Anthropic assets including Claude Mythos draft
A data leak from Anthropic's content management system revealed nearly 3,000 internal assets, including a draft blog post for Claude Mythos and its Capybara tier. This leak heightened market speculation about upcoming models but did not confirm a public Claude 5 release, causing some price volatility.
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