Anthropic
35 releases on record since 14 Mar 2023. The typical gap between releases is 43 days.
- Latest release
- Claude Haiku 5.57 Oct 2026
- Days since
- 0
- Typical gap
- 43 daysMiddle half 24–85 days, from 24 gaps
- Shortest and longest gap
- 11 and 125 days
Next release
EstimateBetween 20 Oct 2026 and 26 Nov 2026
From the last 12 gaps between Anthropic releases. The window covers the middle 80% of the gaps that are left.
How often windows like this were right: 13 of 18 times for Anthropic, 315 of 437 times (72%) across all labs, replaying each lab's past releases. A window aims for 8 in 10.
Saved estimates (2)
| Made | After | Window | Outcome |
|---|---|---|---|
| 7 Oct 2026 | Claude Haiku 5.5 | 20 Oct 2026 – 26 Nov 2026 | Open |
| 7 Oct 2026 | Claude Opus 5.5 | 11 Oct 2026 – 13 Nov 2026 | Outside Claude Haiku 5.5, 7 Oct 2026 |
History
| Date | Model | Gap | Date from | Listed on |
|---|---|---|---|---|
| 7 Oct 2026 | Claude Haiku 5.5 (batch) Variant of Claude Haiku 5.5 | – | OpenRouter catalog
| OpenRouter |
| 7 Oct 2026 | Claude Haiku 5.5 | 15 d | 3 sources agree
| Vercel AI Gateway, Requesty, OpenCode Zen, OpenRouter, OpenCode Go, Anthropic+10 more on models.devnano-gpt, kilo, azure, azure-cognitive-services, google-vertex-anthropic, amazon-bedrock, google-vertex, llmgateway-providers, merge-gateway, llmgateway |
| 28 Sep 2026 | Claude Sonnet 5.5 Thinking Variant of Claude Sonnet 5.5 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 28 Sep 2026 | Claude Sonnet 5.5 (batch) Variant of Claude Sonnet 5.5 | – | OpenRouter catalog
| OpenRouter |
| 26 Sep 2026 | Claude Sonnet 5.5 | – | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+19 more on models.devnano-gpt, llmgateway-providers, kilo, 302ai, azure, azure-cognitive-services, cloudflare-ai-gateway, google-vertex-anthropic, ofox, merge-gateway, github-copilot, edenai, amazon-bedrock, llmgateway, vivgrid, google-vertex, cortecs, crossmodel, digitalocean |
| 22 Sep 2026 | Claude Opus 5.5 (batch) Variant of Claude Opus 5.5 | – | OpenRouter catalog
| OpenRouter |
| 22 Sep 2026 | Claude Opus 5.5 (Fast) Variant of Claude Opus 5.5 | – | 2 sources agree
| Vercel AI Gateway, Venice |
| 22 Sep 2026 | Claude Opus 5.5 | 24 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+22 more on models.devnano-gpt, llmgateway-providers, kilo, 302ai, azure, azure-cognitive-services, zenmux, cloudflare-ai-gateway, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, github-copilot, edenai, amazon-bedrock, llmgateway, vivgrid, google-vertex, cortecs, crossmodel, digitalocean |
| 1 Sep 2026 | Claude Fable 5.1 (batch) Variant of Claude Fable 5.1 | – | OpenRouter catalog
| OpenRouter |
| 29 Aug 2026 | Claude Fable 5.1 | 37 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty+23 more on models.devnano-gpt, llmgateway-providers, kilo, 302ai, azure, azure-cognitive-services, zenmux, cloudflare-ai-gateway, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, github-copilot, edenai, tempr, amazon-bedrock, llmgateway, vivgrid, google-vertex, crossmodel, digitalocean |
| 24 Jul 2026 | Claude Opus 5 (batch) Variant of Claude Opus 5 | – | OpenRouter catalog
| OpenRouter |
| 24 Jul 2026 | Claude Opus 5 Thinking One host lists it; not counted | – | models.dev metadata
| 1 host on models.dev302ai |
| 23 Jul 2026 | Claude Opus 5 (Fast) Variant of Claude Opus 5 | – | 2 sources agree
| Vercel AI Gateway, Venice+1 more on models.devpioneer |
| 23 Jul 2026 | Claude Opus 5 | 24 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+29 more on models.devnano-gpt, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, azure, azure-cognitive-services, cloudflare-ai-gateway, agentrouter, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, tempr, kenari, amazon-bedrock, llmgateway, vivgrid, google-vertex, cortecs, crossmodel, digitalocean |
| 30 Jun 2026 | Claude Sonnet 5 Thinking Variant of Claude Sonnet 5 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 30 Jun 2026 | Claude Sonnet 5 (batch) Variant of Claude Sonnet 5 | – | OpenRouter catalog
| OpenRouter |
| 30 Jun 2026 | Claude Sonnet 5 Free Variant of Claude Sonnet 5 | – | models.dev metadata
| 1 host on models.devzenmux |
| 30 Jun 2026 | Claude 5 Sonnet One host lists it; not counted | – | models.dev metadata
| 1 host on models.devdigitalocean |
| 29 Jun 2026 | Claude Sonnet 5 | 22 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+31 more on models.devnano-gpt, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, azure, azure-cognitive-services, zenmux, unorouter, impossibl, cloudflare-ai-gateway, model-oracle-ai, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, tempr, kenari, amazon-bedrock, llmgateway, vivgrid, google-vertex, cortecs, crossmodel |
| 9 Jun 2026 | Claude Mythos 5 | – | models.dev metadata
| 2 hosts on models.devazure, azure-cognitive-services |
| 9 Jun 2026 | Claude Fable 5 (batch) Variant of Claude Fable 5 | – | OpenRouter catalog
| OpenRouter |
| 7 Jun 2026 | Claude Fable 5 | 11 d | 3 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+33 more on models.devnano-gpt, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, azure, freemodel, azure-cognitive-services, zenmux, impossibl, xpersona, cloudflare-ai-gateway, model-oracle-ai, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, tempr, modelis, kenari, amazon-bedrock, llmgateway, vivgrid, google-vertex, crossmodel, digitalocean |
| 28 May 2026 | Claude Opus4.8 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devcortecs |
| 28 May 2026 | Claude Opus 4.8 Thinking Variant of Claude Opus 4.8 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 28 May 2026 | Claude Opus 4.8 Think One host lists it; not counted | – | models.dev metadata
| 1 host on models.devaihubmix |
| 28 May 2026 | Claude Opus 4.8 (Fast) Variant of Claude Opus 4.8 | – | 2 sources agree
| Vercel AI Gateway, Venice |
| 27 May 2026 | Claude Opus 4.8 (batch) Variant of Claude Opus 4.8 | – | OpenRouter catalog
| OpenRouter |
| 27 May 2026 | Claude Opus 4.8 | 50 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+39 more on models.devpoe, nano-gpt, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, routing-run, azure, freemodel, azure-cognitive-services, zenmux, unorouter, impossibl, xpersona, gmicloud, cloudflare-ai-gateway, agentrouter, model-oracle-ai, fastrouter, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, tempr, modelis, kenari, amazon-bedrock, llmgateway, google-vertex, daoxe, crossmodel, digitalocean |
| 16 Apr 2026 | Claude Opus4.7 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devcortecs |
| 16 Apr 2026 | Claude Opus 4.7 Thinking Variant of Claude Opus 4.7 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 16 Apr 2026 | Claude Opus 4.7 (batch) Variant of Claude Opus 4.7 | – | OpenRouter catalog
| OpenRouter |
| 16 Apr 2026 | Claude Opus 4.7 Thinking One host lists it; not counted | – | models.dev metadata
| 1 host on models.dev302ai |
| 16 Apr 2026 | Claude Opus 4.7 Think One host lists it; not counted | – | models.dev metadata
| 1 host on models.devaihubmix |
| 14 Apr 2026 | Claude Opus 4.7 | – | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+37 more on models.devperplexity-agent, poe, nano-gpt, nearai, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, azure, freemodel, azure-cognitive-services, auriko, zenmux, impossibl, gmicloud, cloudflare-ai-gateway, frogbot, anyapi, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, hpc-ai, tempr, kenari, amazon-bedrock, llmgateway, google-vertex, crossmodel, digitalocean |
| 7 Apr 2026 | Claude Mythos Preview | 49 d | Epoch AI model data
| – |
| 18 Feb 2026 | Claude Sonnet 4.6 Thinking One host lists it; not counted | – | models.dev metadata
| 1 host on models.dev302ai |
| 17 Feb 2026 | Claude Sonnet 4.6 Thinking Variant of Claude Sonnet 4.6 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 17 Feb 2026 | Claude Sonnet 4.6 (batch) Variant of Claude Sonnet 4.6 | – | OpenRouter catalog
| OpenRouter |
| 17 Feb 2026 | Claude Sonnet 4.6 Think One host lists it; not counted | – | models.dev metadata
| 1 host on models.devaihubmix |
| 17 Feb 2026 | Claude Sonnet 4.6 | – | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty, DeepInfra+40 more on models.devperplexity-agent, poe, nano-gpt, nearai, llmgateway-providers, kilo, snowflake-cortex, abacus, 302ai, routing-run, azure, freemodel, azure-cognitive-services, auriko, zenmux, impossibl, xpersona, gmicloud, cloudflare-ai-gateway, frogbot, anyapi, fastrouter, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, github-copilot, edenai, tempr, modelis, kenari, amazon-bedrock, llmgateway, google-vertex, daoxe, crossmodel |
| 17 Feb 2026 | Claude 4.6 Sonnet | 13 d | models.dev metadata
| 2 hosts on models.devcortecs, digitalocean |
| 5 Feb 2026 | Claude Opus4.6 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devcortecs |
| 5 Feb 2026 | Claude Opus 4.6 Thinking Variant of Claude Opus 4.6 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 5 Feb 2026 | Claude Opus 4.6 V1 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devamazon-bedrock |
| 5 Feb 2026 | Claude Opus 4.6 Think One host lists it; not counted | – | models.dev metadata
| 1 host on models.devaihubmix |
| 4 Feb 2026 | Claude Opus 4.6 (batch) Variant of Claude Opus 4.6 | – | OpenRouter catalog
| OpenRouter |
| 4 Feb 2026 | Claude Opus 4.6 | 75 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty+32 more on models.devperplexity-agent, poe, nano-gpt, nearai, llmgateway-providers, kilo, snowflake-cortex, abacus, azure, freemodel, azure-cognitive-services, auriko, zenmux, impossibl, gmicloud, cloudflare-ai-gateway, frogbot, anyapi, jiekou, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, merge-gateway, opper, pioneer, edenai, tempr, llmgateway, google-vertex, digitalocean |
| 24 Nov 2025 | Claude Opus4.5 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devcortecs |
| 24 Nov 2025 | Claude Opus 4.5 Thinking Variant of Claude Opus 4.5 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 24 Nov 2025 | Claude Opus 4.5 (batch) Variant of Claude Opus 4.5 | – | OpenRouter catalog
| OpenRouter |
| 24 Nov 2025 | Claude 4.5 Opus | – | models.dev metadata
| 2 hosts on models.devqiniu-ai, helicone |
| 21 Nov 2025 | Claude Opus 4.5 | 37 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty+21 more on models.devperplexity-agent, poe, nano-gpt, kilo, snowflake-cortex, azure, azure-cognitive-services, zenmux, impossibl, cloudflare-ai-gateway, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, opper, pioneer, edenai, tempr, google-vertex, digitalocean |
| 1 Nov 2025 | Claude Opus 4.5 20251101 V1 0 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devamazon-bedrock |
| 1 Nov 2025 | Claude Opus 4.5 20251101 Update of Claude Opus 4.5 | – | models.dev metadata
| Anthropic+9 more on models.devllmgateway-providers, abacus, 302ai, qihang-ai, jiekou, merge-gateway, edenai, tempr, llmgateway |
| 15 Oct 2025 | Claude Haiku 4.5 Thinking Variant of Claude Haiku 4.5 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 15 Oct 2025 | Claude Haiku 4.5 (batch) Variant of Claude Haiku 4.5 | – | OpenRouter catalog
| OpenRouter |
| 15 Oct 2025 | Claude Haiku 4.5 20251001 V1 0 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devamazon-bedrock |
| 15 Oct 2025 | Claude Haiku 4.5 | 19 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, OpenCode Zen, Requesty, DeepInfra+31 more on models.devperplexity-agent, poe, nano-gpt, nearai, llmgateway-providers, kilo, snowflake-cortex, 302ai, azure, azure-cognitive-services, zenmux, impossibl, xpersona, cloudflare-ai-gateway, frogbot, anyapi, model-oracle-ai, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, opper, pioneer, github-copilot, tempr, llmgateway, google-vertex, cortecs, crossmodel, digitalocean |
| 1 Oct 2025 | Claude Haiku 4.5 20251001 Update of Claude Haiku 4.5 | – | models.dev metadata
| Anthropic+12 more on models.devllmgateway-providers, abacus, 302ai, freemodel, qihang-ai, unorouter, jiekou, merge-gateway, tempr, llmgateway, helicone, daoxe |
| 1 Oct 2025 | Claude 4.5 Haiku | – | models.dev metadata
| 2 hosts on models.devqiniu-ai, helicone |
| 30 Sep 2025 | Claude Sonnet 4.5 20250929 Thinking One host lists it; not counted | – | models.dev metadata
| 1 host on models.dev302ai |
| 29 Sep 2025 | Claude Sonnet 4.5 Thinking Variant of Claude Sonnet 4.5 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 29 Sep 2025 | Claude Sonnet 4.5 (batch) Variant of Claude Sonnet 4.5 | – | OpenRouter catalog
| OpenRouter |
| 29 Sep 2025 | Claude Sonnet 4.5 20250929 V1 0 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devamazon-bedrock |
| 29 Sep 2025 | Claude Sonnet 4.5 20250929 Update of Claude Sonnet 4.5 | – | models.dev metadata
| Anthropic+9 more on models.devllmgateway-providers, abacus, 302ai, qihang-ai, jiekou, merge-gateway, tempr, llmgateway, helicone |
| 29 Sep 2025 | Claude 4.5 Sonnet | – | models.dev metadata
| 4 hosts on models.devqiniu-ai, helicone, cortecs, digitalocean |
| 26 Sep 2025 | Claude Sonnet 4.5 | 52 d | 4 sources agree
| OpenRouter, Vercel AI Gateway, Anthropic, Venice, OpenCode Zen, Requesty+23 more on models.devperplexity-agent, poe, nano-gpt, nearai, llmgateway-providers, kilo, snowflake-cortex, azure, azure-cognitive-services, zenmux, impossibl, cloudflare-ai-gateway, anyapi, orcarouter, google-vertex-anthropic, ofox, neon, aihubmix, opper, pioneer, tempr, llmgateway, google-vertex |
| 5 Aug 2025 | Claude Opus 4.1 Thinking Variant of Claude Opus 4.1 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 5 Aug 2025 | Claude Opus 4.1 (batch) Variant of Claude Opus 4.1 | – | OpenRouter catalog
| OpenRouter |
| 5 Aug 2025 | Claude Opus 4.1 20250805 V1 0 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devamazon-bedrock |
| 5 Aug 2025 | Claude Opus 4.1 20250805 Update of Claude Opus 4.1 | – | models.dev metadata
| 6 hosts on models.devabacus, 302ai, jiekou, merge-gateway, llmgateway, helicone |
| 5 Aug 2025 | Claude Opus 4.1 | – | 3 sources agree
| OpenRouter, OpenCode Zen, Requesty+12 more on models.devpoe, nano-gpt, kilo, azure, azure-cognitive-services, zenmux, fastrouter, google-vertex-anthropic, neon, pioneer, google-vertex, helicone |
| 5 Aug 2025 | Claude 4.1 Opus | 76 d | models.dev metadata
| 2 hosts on models.devqiniu-ai, digitalocean |
| 5 Aug 2025 | Claude 4 Sonnet One host lists it; not counted | – | models.dev metadata
| 1 host on models.devqiniu-ai |
| 5 Aug 2025 | Claude 4 Opus One host lists it; not counted | – | models.dev metadata
| 1 host on models.devqiniu-ai |
| 27 May 2025 | Claude Opus 4.1 20250805 Thinking One host lists it; not counted | – | models.dev metadata
| 1 host on models.dev302ai |
| 21 May 2025 | Claude Sonnet 4 | – | 4 sources agree
| OpenRouter, Vercel AI Gateway, OpenCode Zen, Requesty+10 more on models.devpoe, nano-gpt, kilo, zenmux, fastrouter, google-vertex-anthropic, google-vertex, helicone, cortecs, digitalocean |
| 21 May 2025 | Claude Opus 4 | 86 d | 3 sources agree
| Vercel AI Gateway, Requesty+6 more on models.devpoe, zenmux, google-vertex-anthropic, google-vertex, helicone, digitalocean |
| 14 May 2025 | Claude Sonnet 4 20250514 Update of Claude Sonnet 4 | – | models.dev metadata
| 3 hosts on models.devabacus, jiekou, merge-gateway |
| 14 May 2025 | Claude Opus 4 20250514 Update of Claude Opus 4 | – | models.dev metadata
| 3 hosts on models.devabacus, jiekou, merge-gateway |
| 24 Feb 2025 | Claude Sonnet 4 Thinking Variant of Claude Sonnet 4 | – | models.dev metadata
| 1 host on models.devnano-gpt |
| 24 Feb 2025 | Claude 3.7 Sonnet | 125 d | 2 sources agree
| 4 hosts on models.devzenmux, qiniu-ai, helicone, digitalocean |
| 19 Feb 2025 | Claude Sonnet 3.7 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devpoe |
| 19 Feb 2025 | Claude 3.7 Sonnet 20250219 Update of Claude 3.7 Sonnet | – | models.dev metadata
| 2 hosts on models.devabacus, merge-gateway |
| 18 Nov 2024 | Claude Sonnet 3.5 June One host lists it; not counted | – | models.dev metadata
| 1 host on models.devpoe |
| 22 Oct 2024 | Claude 3.5 Sonnet V2 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devhelicone |
| 22 Oct 2024 | Claude 3.5 Haiku | 124 d | 2 sources agree
| OpenCode Zen+4 more on models.devzenmux, qiniu-ai, helicone, digitalocean |
| 1 Oct 2024 | Claude Haiku 3.5 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devpoe |
| 20 Jun 2024 | Claude 3.5 Sonnet | 99 d | 2 sources agree
| 2 hosts on models.devqiniu-ai, digitalocean |
| 5 Jun 2024 | Claude Sonnet 3.5 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devpoe |
| 13 Mar 2024 | Claude 3 Haiku | 13 d | 2 sources agree
| Vercel AI Gateway |
| 9 Mar 2024 | Claude Haiku 3 One host lists it; not counted | – | models.dev metadata
| 1 host on models.devpoe |
| 7 Mar 2024 | Claude 3 Haiku 20240307 Update of Claude 3 Haiku | – | models.dev metadata
| 1 host on models.devhelicone |
| 4 Mar 2024 | Claude 3 Sonnet | – | Epoch AI model data
| – |
| 29 Feb 2024 | Claude 3 Opus | 100 d | models.dev metadata
| 1 host on models.devdigitalocean |
| 21 Nov 2023 | Claude 2.1 | 104 d | Epoch AI model data
| – |
| 9 Aug 2023 | Claude Instant | 29 d | Epoch AI model data
| – |
| 11 Jul 2023 | Claude 2 | 84 d | Epoch AI model data
| – |
| 18 Apr 2023 | Claude 1.3 | 35 d | Epoch AI model data
| – |
| 14 Mar 2023 | Claude | – | Epoch AI model data
| – |
Gap is the days since the previous release. Dates are the earliest a source reports; where sources disagree, two or more agreeing sources win over one. These are past dates. Only the Next release panel is an estimate.
Release dates include data from Epoch AI, Data on AI Models (CC BY 4.0).