# Anthropic — AI model releases

Anthropic has 24 AI model releases tracked on AI Release Tracker, from Mar 14 2023 through Jul 24 2026. AI safety company building the Claude family of models. Founded in 2021 by former OpenAI researchers.

Official site: https://www.anthropic.com

## Releases, newest first

| Model | Release date | Licensing | Context window | Page |
| --- | --- | --- | --- | --- |
| Claude Opus 5 | Jul 24 2026 | Proprietary | 1M | https://aireleasetracker.com/model/anthropic/claude-opus-5 |
| Claude Sonnet 5 | Jun 30 2026 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-sonnet-5 |
| Claude Fable 5 | Jun 9 2026 | Proprietary | 1M | https://aireleasetracker.com/model/anthropic/claude-fable-5 |
| Claude Opus 4.8 | May 28 2026 | Proprietary | 1M | https://aireleasetracker.com/model/anthropic/claude-opus-4.8 |
| Claude Opus 4.7 | Apr 16 2026 | Proprietary | 1M | https://aireleasetracker.com/model/anthropic/claude-opus-4.7 |
| Claude Sonnet 4.6 | Feb 17 2026 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-sonnet-4.6 |
| Claude Opus 4.6 | Feb 5 2026 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-opus-4.6 |
| Claude Opus 4.5 | Nov 24 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-opus-4.5 |
| Claude Haiku 4.5 | Oct 15 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-haiku-4.5 |
| Claude Sonnet 4.5 | Sep 29 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-sonnet-4.5 |
| Claude Opus 4.1 | Aug 5 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-opus-4.1 |
| Claude Sonnet 4 | May 22 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-sonnet-4 |
| Claude Opus 4 | May 22 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-opus-4 |
| Claude 3.7 Sonnet | Feb 24 2025 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3.7-sonnet |
| Claude 3.5 Haiku | Oct 22 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3.5-haiku |
| Claude 3.5 Sonnet (upgraded) | Oct 22 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3.5-sonnet-(upgraded) |
| Claude 3.5 Sonnet | Jun 20 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3.5-sonnet |
| Claude 3 Haiku | Mar 4 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3-haiku |
| Claude 3 Sonnet | Mar 4 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3-sonnet |
| Claude 3 Opus | Mar 4 2024 | Proprietary | — | https://aireleasetracker.com/model/anthropic/claude-3-opus |
| Claude 2.1 | Nov 21 2023 | Proprietary | 200k | https://aireleasetracker.com/model/anthropic/claude-2.1 |
| Claude Instant 1.2 | Aug 9 2023 | Proprietary | 100k | https://aireleasetracker.com/model/anthropic/claude-instant-1.2 |
| Claude 2 | Jul 11 2023 | Proprietary | 100k | https://aireleasetracker.com/model/anthropic/claude-2 |
| Claude 1 | Mar 14 2023 | Proprietary | 9k | https://aireleasetracker.com/model/anthropic/claude-1 |


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Canonical page: https://aireleasetracker.com/company/anthropic
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.