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Anthropic timeline

Every model launch, feature release, outage, usage-limit change and price move we have tracked, newest first. Each links to its sources.

Models, 90 days5Confirmed launches
Features, 90 days25Products and updates
Incidents, 90 days60From status pages and reports
Limits and pricing9Changes in 90 days

Model lineup

Every Anthropic model in our catalogue, newest first, with context and list price per million tokens (input / output). Compare all prices

Sep 2026Claude Sonnet 5.5Balanced · 1M ctx$2.00 / $10.00
Sep 2026Claude Opus 5.5Flagship · 1M ctx$4.00 / $20.00
Sep 2026Claude Fable 5.1Frontier · 1M ctx$10.00 / $50.00
Sep 2026Claude Mythos 5.1Enterprise · 1M ctx$10.00 / $50.00
Jul 2026Claude Opus 5Flagship · 1M ctx$5.00 / $25.00
Jun 2026Claude Fable 5Frontier · 1M ctx$10.00 / $50.00
Jun 2026Claude Mythos 5Enterprise · 1M ctx$10.00 / $50.00
Jun 2026Claude Sonnet 5Balanced · 1M ctx$2.00 / $10.00
May 2026Claude Opus 4.8Flagship · 1M ctx$5.00 / $25.00
Apr 2026Claude Opus 4.7Legacy · 1M ctx$5.00 / $25.00Retired
Feb 2026Claude Opus 4.6Legacy · 1M ctx$5.00 / $25.00Retired
Feb 2026Claude Sonnet 4.6Legacy · 1M ctx$3.00 / $15.00Retired
Nov 2025Claude Opus 4.5Legacy · 200K ctx$5.00 / $25.00Retired
Oct 2025Claude Haiku 4.5Efficient · 200K ctx$1.00 / $5.00
Sep 2025Claude Sonnet 4.5Legacy · 200K ctx$3.00 / $15.00Retired
Aug 2025Claude Opus 4.1Legacy · 200K ctx$15.00 / $75.00Retired
Oct 2024Claude Haiku 3.5Legacy · 200K ctx$0.80 / $4.00Retired

Timeline

Milestones first. Minor items (small updates, brief status-page incidents, posts without news) are one tap away.

October 2026

  1. 18 Oct
    Anthropic commits 5% of shares to public benefit fundMoney and policy · Money news
  2. 16 Oct
    Replit ends partnership with Anthropic, CEO saysFeatures · Product update
  3. 15 Oct
    Anthropic makes Code Review generally availableFeatures · New product or feature
  4. 15 Oct
    Anthropic issues update on independent evaluatorsFeatures · Policy or regulatory step
  5. 14 Oct
    Anthropic prepares for 2026 US midtermsMoney and policy · Policy or regulatory step
  6. 14 Oct
    Anthropic adds agent observability to Claude PlatformFeatures · New product or feature
  7. 14 Oct
    Anthropic opens Singapore office and signs government MOUMoney and policy · Policy or regulatory step
  8. 13 Oct
    Anthropic cuts Claude reasoning token theft by up to 99%Outages and incidents · Security incident
  9. 13 Oct
    Anthropic study warns small AI models could self-replicate across devicesResearch · Research
  10. 9 Oct
    Anthropic AI model sent false homicide tip to Philadelphia policeOutages and incidents · Security incident
  11. 8 Oct
    Anthropic highlights building dashboards and explainers with ClaudeFeatures · Security incident
  12. 8 Oct
    Anthropic launches Cyber Mission initiativeFeatures · New product or feature
  13. 8 Oct
    Anthropic updates its Usage Policy for 2026Money and policy · Policy or regulatory step
  14. 7 Oct
    Claude Haiku 5.5 launches on Amazon Bedrock and Claude Platform on AWSModels · New-generation model
  15. 7 Oct
    Anthropic investigates elevated errors on Claude usage dataOutages and incidents · Major outage
  16. 7 Oct
    Anthropic resolves usage data errors on Claude platformOutages and incidents · Major outage
  17. 6 Oct
    Anthropic investigates elevated errors on Claude Opus 5.5Outages and incidents · Major outage
  18. 6 Oct
    Claude integrates with Google Docs, Sheets and SlidesFeatures · New product or feature
  19. 6 Oct
    Anthropic expands Claude Startups program for foundersFeatures · Product update
  20. 6 Oct
    Anthropic expands its Cyber Verification ProgramLimits and pricing · Usage limits raised
  21. 5 Oct
    Anthropic investigates elevated errors on Claude Mythos 5.1 and Fable 5.1Outages and incidents · Major outage
  22. 2 Oct
    Anthropic invests $100 million to train 10,000 engineersMoney and policy · Money news
  23. 1 Oct
    Anthropic reportedly targets November 9 IPO launchMoney and policy · Money news
  24. 1 Oct
    Anthropic investigates Claude API credit balance delaysOutages and incidents · Minor service incident
  25. 1 Oct
    Barclays scales Claude across operations and client experienceLimits and pricing · Research
  26. 1 Oct
    Anthropic adds mods for customizing Claude CodeFeatures · Security incident

September 2026

  1. 30 Sep
    Anthropic Claude models come to Amazon Bedrock in Seoul and SingaporeFeatures · New product or feature
  2. 29 Sep
    Claude services hit by major outage, now resolvedOutages and incidents · Major outage
  3. 29 Sep
    Anthropic prospectus shows large losses and rapid growthMoney and policy · Money news
  4. 28 Sep
    Anthropic introduces Claude Sonnet 5.5Models · New-generation model · 1M context · $2.00 in / $10.00 out per 1M
  5. 28 Sep
    Anthropic and NVIDIA partner on enterprise AI agent controlsFeatures · New product or feature
  6. 25 Sep
    US appeals court upholds Anthropic supply chain risk designationMoney and policy · Law or ruling
  7. 25 Sep
    Anthropic signs $11.6 billion cloud deal with AkamaiMoney and policy · Major money news
  8. 24 Sep
    Claude Tag adds personal connectors in channelsFeatures · Product update
  9. 23 Sep
    Anthropic makes Claude Code cloud sessions generally availableLimits and pricing · New product or feature
  10. 23 Sep
    Anthropic offers up to $250 in free Claude Code credits for cloud sessionsLimits and pricing · Usage limits raised
  11. 23 Sep
    Anthropic launches Claude Marketplace for partner plugins and agentsFeatures · New product or feature
  12. 23 Sep
    Anthropic launches Claude for Microsoft 365Features · New product or feature
  13. 23 Sep
    Claude discovers novel enzyme system with CRISPR-like repeatsResearch · Research
  14. 22 Sep
    Anthropic launches Opus 5.5 with higher Claude Code session limitsLimits and pricing · Usage limits raised
  15. 22 Sep
    Anthropic introduces Claude Opus 5.5Models · Frontier-class model launch · 1M context · $4.00 in / $20.00 out per 1M
  16. 22 Sep
    Anthropic resolves elevated errors affecting multiple Claude modelsOutages and incidents · Major outage
  17. 18 Sep
    Anthropic opens AI-powered biology research labFeatures · New product or feature
  18. 18 Sep
    Researchers use Claude to breach OpenAI employee accountOutages and incidents · Security incident
  19. 17 Sep
    Anthropic redesigns Projects around conversationsFeatures · Product update
  20. 16 Sep
    Anthropic merges Claude Cowork and chat into one ClaudeFeatures · Product update
  21. 15 Sep
    Anthropic resolves error spikes affecting Claude Mythos 5.1 and Fable 5.1Outages and incidents · Major outage
  22. 15 Sep
    Anthropic launches Claude for Small Business workflows and trainingFeatures · New product or feature
  23. 15 Sep
    Anthropic brings Salesforce integration into ClaudeFeatures · New product or feature
  24. 14 Sep
    Claude Cowork on Windows degraded, issue resolvedOutages and incidents · Major outage
  25. 14 Sep
    Anthropic launches Claude for Financial AdvisorsFeatures · New product or feature
  26. 12 Sep
    Nvidia in talks to invest up to $10B in Anthropic IPOMoney and policy · Major money news
  27. 11 Sep
    Claude services hit by elevated errors, now resolvedOutages and incidents · Major outage
  28. 10 Sep
    Elevated latency on Claude API resolved after 101 minutesOutages and incidents · Minor service incident
  29. 10 Sep
    T. Rowe Price expands use of Claude in investment processFeatures · Product update
  30. 9 Sep
    Anthropic researcher resigns over self-improving AI concernsOutages and incidents · Incident report
  31. 8 Sep
    Anthropic warns users after hackers steal Claude tokensOutages and incidents · Security incident
  32. 6 Sep
    Anthropic $1.5B book settlement disputed over payout splitMoney and policy · Major money news
  33. 4 Sep
    Anthropic resets Claude Code weekly limits for Max usersLimits and pricing · Usage limits raised
  34. 3 Sep
    Anthropic resolves elevated errors affecting multiple Claude modelsOutages and incidents · Major outage
  35. 3 Sep
    Anthropic resolves elevated errors on Claude Sonnet 5Outages and incidents · Major outage
  36. 2 Sep
    Claude Sonnet 5 errors resolved after 26 minutesOutages and incidents · Major outage
  37. 2 Sep
    Anthropic resolves delays in Claude credit purchasesOutages and incidents · Minor service incident
  38. 1 Sep
    Anthropic ships Fable 5.1 and resets Claude Code usage limitsLimits and pricing · Usage limits raised
  39. 1 Sep
    Claude platform and Office 365 add-in had degraded performanceOutages and incidents · Minor service incident
  40. 1 Sep
    Anthropic launches Claude Fable 5.1 and Mythos 5.1Models · Flagship model launch · 1M context · $10.00 in / $50.00 out per 1M
  41. 1 Sep
    Claude for Microsoft Office 365 had degraded performanceOutages and incidents · Minor service incident

August 2026

  1. 31 Aug
    Claude.ai and Claude Code see degraded performanceOutages and incidents · Minor service incident
  2. 31 Aug
    Claude.ai performance degraded for 29 minutesOutages and incidents · Minor service incident
  3. 29 Aug
    Sony Music and Warner sue Anthropic over copyright claimsMoney and policy · Policy or regulatory step
  4. 29 Aug
    Anthropic swaps its 50% Claude Code limit boost for a permanent 25%Limits and pricing · Usage limits cut
  5. 28 Aug
    Anthropic resolves elevated errors on Claude Code and Claude CoworkOutages and incidents · Major outage
  6. 28 Aug
    Anthropic previews MHS standard for AI agents controlling machinesFeatures · New product or feature
  7. 26 Aug
    Anthropic signs $45B compute deal with NscaleMoney and policy · Major money news
  8. 25 Aug
    Anthropic adds shared memory across Claude chat and CoworkFeatures · Product update
  9. 24 Aug
    Anthropic resolves Claude.ai login issueOutages and incidents · Minor service incident
  10. 24 Aug
    Anthropic resolves Claude.ai login errorsOutages and incidents · Minor service incident
  11. 24 Aug
    Anthropic resolves elevated errors affecting Claude modelsOutages and incidents · Major outage
  12. 21 Aug
    Tests find Anthropic's Opus 4.6 can bypass explicit content limitsOutages and incidents · Security incident
  13. 20 Aug
    Anthropic reportedly aims to match SpaceX record IPO raiseMoney and policy · Money news
  14. 20 Aug
    Anthropic resolves elevated errors on requests to multiple modelsOutages and incidents · Major outage
  15. 20 Aug
    Anthropic resolves elevated errors on Google connectorsOutages and incidents · Minor service incident
  16. 19 Aug
    Anthropic resolves degraded performance for Claude Opus 5 and Haiku 4.5Outages and incidents · Minor service incident
  17. 18 Aug
    Anthropic extends higher Claude Code weekly limits through August 31Limits and pricing · Usage limits raised
  18. 18 Aug
    Claude Opus 5 performance issue resolved after outageOutages and incidents · Minor service incident
  19. 17 Aug
    Anthropic annualized revenue tops $65 billionMoney and policy · Major money news
  20. 17 Aug
    Anthropic resolves degraded performance for Claude Opus 5 and Sonnet 5Outages and incidents · Minor service incident
  21. 16 Aug
    Claude services disruption resolved after 36 minutesOutages and incidents · Major outage
  22. 15 Aug
    Claude Fable 5 errors resolved after outageOutages and incidents · Major outage
  23. 14 Aug
    Anthropic details unreleased Model 2 in AI risk reportResearch · Research
  24. 14 Aug
    Claude API, Code and Cowork disruption resolvedOutages and incidents · Major outage
  25. 14 Aug
    Claude Code on the web hit by brief service disruptionOutages and incidents · Minor service incident
  26. 13 Aug
    Anthropic resolves elevated errors affecting Claude modelsOutages and incidents · Major outage
  27. 12 Aug
    Anthropic adds watermarks to Claude outputs, users complainFeatures · Product update
  28. 12 Aug
    Anthropic resolves degraded performance across multiple Claude modelsOutages and incidents · Minor service incident
  29. 11 Aug
    Anthropic prepares IPO amid investor skepticismMoney and policy · Major money news
  30. 11 Aug
    Anthropic watermarks all Claude outputs globallyMoney and policy · Policy or regulatory step
  31. 8 Aug
    Anthropic makes Auto Mode default in Claude CodeFeatures · Product update
  32. 8 Aug
    Study finds AI agents use far more energy than chat promptsResearch · Research
  33. 5 Aug
    Claude Opus 5 performance degraded for 43 minutesOutages and incidents · Minor service incident
  34. 5 Aug
    Anthropic resolves degraded performance incident affecting multiple modelsOutages and incidents · Minor service incident
  35. 5 Aug
    UK safety test finds AI agent acting without instructionOutages and incidents · Security incident
  36. 4 Aug
    Anthropic resolves elevated errors across many Claude modelsOutages and incidents · Major outage
  37. 4 Aug
    Anthropic resolves elevated errors on Claude Sonnet 5Outages and incidents · Minor service incident
  38. 4 Aug
    Anthropic resolves elevated errors on Claude Sonnet 5Outages and incidents · Minor service incident
  39. 3 Aug
    Claude Sonnet 5 error rates return to baseline after brief incidentOutages and incidents · Minor service incident
  40. 3 Aug
    Anthropic resolves error rate incident across multiple modelsOutages and incidents · Minor service incident

July 2026

  1. 31 Jul
    Claude Sonnet 5 performance degraded for 47 minutesOutages and incidents · Minor service incident
  2. 31 Jul
    Anthropic says Claude models attacked real systems in testsOutages and incidents · Security incident
  3. 30 Jul
    Anthropic resolves degraded performance on Claude Opus 4.8Outages and incidents · Minor service incident
  4. 30 Jul
    Anthropic resolves elevated errors across many Claude modelsOutages and incidents · Major outage
  5. 29 Jul
    Anthropic resolves elevated errors across all Claude modelsOutages and incidents · Major outage
  6. 27 Jul
    Anthropic reports elevated errors on Claude Opus 5 and Haiku 4.5Outages and incidents · Minor service incident
  7. 27 Jul
    Anthropic reports elevated errors on Claude Opus 5, now resolvedOutages and incidents · Minor service incident
  8. 27 Jul
    Anthropic reports elevated errors on Claude Opus 5Outages and incidents · Minor service incident
  9. 27 Jul
    Shared Claude chats briefly appeared in Google search resultsOutages and incidents · Security incident
  10. 26 Jul
    Anthropic resolves elevated errors affecting Opus 5Outages and incidents · Major outage
  11. 25 Jul
    Anthropic resolves elevated errors affecting Claude modelsOutages and incidents · Major outage
  12. 25 Jul
    Anthropic resolves elevated errors affecting several Claude modelsOutages and incidents · Major outage
  13. 25 Jul
    Anthropic releases Claude Opus 5, tops Artificial Analysis Intelligence IndexModels · Frontier-class model launch · 1M context · $5.00 in / $25.00 out per 1M

June 2026

  1. Jun
    Claude Fable 5 releasedFrontier · 1M context · $10.00 in / $50.00 out per 1M
  2. Jun
    Claude Mythos 5 releasedEnterprise · 1M context · $10.00 in / $50.00 out per 1M
  3. Jun
    Claude Sonnet 5 releasedBalanced · 1M context · $2.00 in / $10.00 out per 1M

May 2026

  1. May
    Claude Opus 4.8 releasedFlagship · 1M context · $5.00 in / $25.00 out per 1M

April 2026

  1. Apr
    Claude Opus 4.7 releasedLegacy · 1M context · $5.00 in / $25.00 out per 1M · retired

February 2026

  1. Feb
    Claude Opus 4.6 releasedLegacy · 1M context · $5.00 in / $25.00 out per 1M · retired
  2. Feb
    Claude Sonnet 4.6 releasedLegacy · 1M context · $3.00 in / $15.00 out per 1M · retired

November 2025

  1. Nov
    Claude Opus 4.5 releasedLegacy · 200K context · $5.00 in / $25.00 out per 1M · retired

October 2025

  1. Oct
    Claude Haiku 4.5 releasedEfficient · 200K context · $1.00 in / $5.00 out per 1M

September 2025

  1. Sep
    Claude Sonnet 4.5 releasedLegacy · 200K context · $3.00 in / $15.00 out per 1M · retired

August 2025

  1. Aug
    Claude Opus 4.1 releasedLegacy · 200K context · $15.00 in / $75.00 out per 1M · retired

October 2024

  1. Oct
    Claude Haiku 3.5 releasedLegacy · 200K context · $0.80 in / $4.00 out per 1M · retired

Stories come from the Wire from July 2026 on; earlier model releases come from our catalogue and are dated to the month. Anthropic on the Vikshy Score