Updates

What just changed?

New models, rollouts into products, new capabilities. Every change is backed by its source and dated by when it happened, not by when we wrote it down. Whether a statement still holds today is a separate check — where that is pending, it says “not verified”.

Last change recorded (yesterday)957 sourced entries · 166 source documents

202520262024-03: 2 sourced changes22024-05: 1 sourced changes12024-06: 4 sourced changes42024-09: 1 sourced changes12024-10: 1 sourced changes12024-11: 1 sourced changes12025-02: 5 sourced changes52025-03: 2 sourced changes22025-04: 10 sourced changes102025-05: 20 sourced changes202025-06: 11 sourced changes112025-08: 8 sourced changes82025-09: 10 sourced changes102025-10: 23 sourced changes232025-11: 7 sourced changes72025-12: 1 sourced changes12026-01: 5 sourced changes52026-02: 10 sourced changes102026-04: 8 sourced changes82026-05: 2 sourced changes22026-06: 7 sourced changes72026-07: 1 sourced changes12026-08: 1 sourced changes12026-09: 7 sourced changes72026-10: 1 sourced changes1
Sourced changes per month · max 23Month of the time each update states (effective time).
Entries 181–240 of 335 · shown in 58 rows (record-keeping folded per day)

ModelsDeploymentProductRecordCorrectionThe date is when it happened according to the source.

Show movement only

Every entry is shown — also record-keeping (a documented model identity, a state a source check found in place) and confirmations (checks that found an existing state unchanged). Neither means something happened that day.

September 2026

  1. 16 days ago

    3 models documented in the record

    RecordRecord-keeping: a model’s identity was documented, or a source check found a state in place. The date is when it was recorded, not when something happened.

    Show the entries (3)
    1. Model identity documented
      Claude Mythos PreviewAnthropicnew→Identity documented · release unknown
      1www.anthropic.com
    2. Model identity documented
      Claude Fable 5Anthropicnew→Identity documented · release unknown
      1platform.claude.com
    3. Model identity documented
      Claude Fable 5.1Anthropicnew→Identity documented · release unknown
      1platform.claude.com
  2. 18 days ago
    1platform.claude.com
  3. 23 days ago
    1claude.com
  4. 23 days ago
    1claude.com
  5. 24 days agoadded to the record on 30 Sept 2026
    1platform.claude.com
  6. 45 days agoadded to the record on 11 Oct 2026
    1platform.claude.com
  7. 45 days agoadded to the record on 3 Oct 2026
    1docs.github.com
  8. 45 days agoadded to the record on 30 Sept 2026
    1platform.claude.com
  9. 45 days agoadded to the record on 29 Sept 2026

    Claude Sonnet 4.5 removed from GitHub Copilot

    DeploymentAnthropicpreviously: available

    1github.blog
  10. 45 days agoadded to the record on 29 Sept 2026

    Claude Opus 4.5 removed from GitHub Copilot

    DeploymentAnthropicpreviously: available

    1github.blog

August 2026

  1. 2 months agoadded to the record on 29 Sept 2026

    Claude Opus 4.1 retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com

July 2026

  1. 2 months agoadded to the record on 30 Sept 2026

    Claude Opus 5 released

    ModelsAnthropic

    1platform.claude.com

June 2026

  1. 3 months agoadded to the record on 30 Sept 2026
    1platform.claude.com
  2. 4 months agoadded to the record on 29 Sept 2026

    Claude Sonnet 4 retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com
  3. 4 months agoadded to the record on 29 Sept 2026

    Claude Opus 4 retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com
  4. 4 months agoadded to the record on 11 Oct 2026
    1platform.claude.com
  5. 4 months agoadded to the record on 3 Oct 2026
    1platform.claude.com
  6. 4 months agoadded to the record on 30 Sept 2026
    1platform.claude.com
  7. 4 months agoadded to the record on 29 Sept 2026

    Claude Opus 4.1 is being phased out

    ModelsAnthropicpreviously: Released

    1platform.claude.com

May 2026

  1. 4 months agoadded to the record on 30 Sept 2026
    1platform.claude.com
  2. 5 months agoadded to the record on 29 Sept 2026

    Claude Sonnet 4 removed from GitHub Copilot

    DeploymentAnthropicpreviously: available

    1github.blog

April 2026

  1. 6 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  2. 6 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  3. 6 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  4. 6 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  5. 6 months agoadded to the record on 29 Sept 2026

    Claude Sonnet 4 is being phased out

    ModelsAnthropicpreviously: Released

    1platform.claude.com
  6. 6 months agoadded to the record on 29 Sept 2026

    Claude Opus 4 is being phased out

    ModelsAnthropicpreviously: Released

    1platform.claude.com
  7. 6 months agoadded to the record on 29 Sept 2026
    1claude.com
  8. 6 months agoadded to the record on 29 Sept 2026
    1claude.com

February 2026

  1. 7 months agoadded to the record on 29 Sept 2026

    Claude 3.7 Sonnet retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com
  2. 8 months agoadded to the record on 3 Oct 2026
    1docs.github.com
  3. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  4. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  5. 8 months agoadded to the record on 29 Sept 2026

    Claude Opus 4.1 removed from GitHub Copilot — as reported then; current state not verified

    DeploymentAnthropicpreviously: limited availabilityApplies to: Enterprise

  6. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  7. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  8. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  9. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  10. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  11. 8 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com

January 2026

  1. 9 months agoadded to the record on 3 Oct 2026

    Claude Opus 4 removed from Claude Enterprise

    DeploymentAnthropicpreviously: available

    1support.claude.com
  2. 9 months agoadded to the record on 3 Oct 2026

    Claude Opus 4.1 removed from Claude Enterprise

    DeploymentAnthropicpreviously: available

    1support.claude.com
  3. 9 months agoadded to the record on 3 Oct 2026

    Claude Opus 4 removed from Claude Team

    DeploymentAnthropicpreviously: available

    1support.claude.com
  4. 9 months agoadded to the record on 3 Oct 2026

    Claude Opus 4.1 removed from Claude Team

    DeploymentAnthropicpreviously: available

    1support.claude.com
  5. 9 months agoadded to the record on 29 Sept 2026

    Claude 3 Opus retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com

December 2025

  1. 10 months agoadded to the record on 29 Sept 2026

    Claude Opus 4.5 is now available in GitHub Copilot

    DeploymentAnthropicpreviously: limited availability

November 2025

  1. 10 months agoadded to the record on 29 Sept 2026
  2. 10 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  3. 10 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  4. 10 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  5. 10 months agoadded to the record on 29 Sept 2026
    1www.anthropic.com
  6. 11 months agoadded to the record on 29 Sept 2026
  7. 11 months agoadded to the record on 29 Sept 2026

October 2025

  1. 11 months agoadded to the record on 29 Sept 2026

    Claude 3.5 Sonnet retired

    ModelsAnthropicpreviously: Deprecated

    1platform.claude.com
  2. 11 months agoadded to the record on 29 Sept 2026

    Claude 3.7 Sonnet is being phased out

    ModelsAnthropicpreviously: Released

    1platform.claude.com
  3. 11 months agoadded to the record on 3 Oct 2026
    1docs.github.com
  4. 11 months agoadded to the record on 29 Sept 2026

    Claude Opus 4 removed from GitHub Copilot — as reported then; current state not verified

    DeploymentAnthropicpreviously: availableApplies to: Enterprise

  5. 11 months agoadded to the record on 29 Sept 2026