AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

AI Model Release Tracker

Anthropic – AI Models

Release cadence

Days since last release
9 Jun 2026
9
Average
39
Recent releases
9 Jun 2026 · Claude Fable 5
12
28 May 2026 · Claude Opus 4.8
42
16 Apr 2026 · Claude Opus 4.7
58
17 Feb 2026 · Claude Sonnet 4.6
12
5 Feb 2026 · Claude Opus 4.6
73
Expected next release
Jul 18, 2026
In 30 days

Release Frequency (Per Month)

New Anthropic models shipped each calendar month.

32210Mar 23Aug 23Mar 24Oct 24May 25Sep 25Nov 25Apr 26Jun 26

Releases by Year

Year-over-year Anthropic totals. 2026 is partial (through Jun 18).

20234
20245
20257
2026(YTD)5

Best benchmark scores

SWE-Bench Pro
Claude Fable 5
80.3%
Humanity's Last Exam
Claude Opus 4.8
49.8%
OSWorld-Verified
Claude Fable 5
85%
ARC-AGI-2
Claude Opus 4.7
75.8%
GDPval-AA
Claude Fable 5
1932

All Releases

21 releases · Mar 14 2023 – Jun 9 2026

2026

5 releases
Claude Fable 5
Jun 9
Claude Opus 4.8
May 28
Claude Opus 4.7
Apr 16
Claude Sonnet 4.6
Feb 17
Claude Opus 4.6
Feb 5

2025

7 releases
Claude Opus 4.5
Nov 24
Claude Haiku 4.5
Oct 15
Claude Sonnet 4.5
Sep 29
Claude Opus 4.1
Aug 5
Claude Sonnet 4
May 22
Claude Opus 4
May 22
Claude 3.7 Sonnet
Feb 24

2024

5 releases
Claude 3.5 Haiku
Oct 22
Claude 3.5 Sonnet
Jun 20
Claude 3 Haiku
Mar 4
Claude 3 Sonnet
Mar 4
Claude 3 Opus
Mar 4

2023

4 releases
Claude 2.1
Nov 21
Claude Instant 1.2
Aug 9
Claude 2
Jul 11
Claude 1
Mar 14

Other Companies

OpenAI
Google
Meta
xAI
DeepSeek
Mistral
Moonshot AI
Cursor

About Anthropic

AI safety company building the Claude family of models. Founded in 2021 by former OpenAI researchers. AI Release Tracker has logged 21 Anthropic models, from Claude 1 (Mar 14 2023) through Claude Fable 5 (Jun 9 2026). Every release below links to a dedicated page with benchmarks, parameters, and context window.