Claude Timeline: Model Release Dates and Version History
Claude Timeline: Model Release Dates and Version History
摘要: Claude Timeline: Model Release Dates and Version History
Track Claude model versions and release dates from Claude 1 to Opus 5, including Claude Code
正文
Claude Timeline: Model Release Dates and Version History
Track Claude model versions and release dates from Claude 1 to Opus 5, including Claude Code, current models, retired versions, and product milestones.
Claude is Anthropic’s family of AI assistants and large language models. The first public Claude release arrived on
March 14, 2023
, with Claude and Claude Instant available through a chat interface and API.
The most recent Claude model launch in this timeline is
Claude Opus 5
, released on
July 24, 2026
. Anthropic’s current model lineup also includes Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and the restricted-access Claude Mythos 5.
This timeline prioritizes Claude versions and model release dates, then records the Claude products and ecosystem milestones that changed how people use Claude. These include Claude Code, Claude Tag, Claude Design, Claude Science, Claude Security, Claude Cowork, Claude Academy, computer use, the Skills API, the Files API, Skills, the Model Context Protocol, connectors, desktop apps, and managed agents.
Last Updated: August 20, 2026
Claude Timeline Quick Facts
Question
When was Claude first released?
March 14, 2023
When was Claude 2 released?
July 11, 2023
When did the Claude 3 family launch?
March 4, 2024
When was Claude Code introduced?
February 24, 2025, as a research preview
What is the latest Claude model release?
Claude Opus 5, released July 24, 2026
Which Claude models are in the current API lineup?
Claude Fable 5, Claude Opus 5, Claude Sonnet 5, and Claude Haiku 4.5
Which current Claude model has restricted access?
Claude Mythos 5
Claude Versions and Release Dates
Model or Product
Release Date
Key Highlight
Claude Opus 5
July 24, 2026
Opus model for complex agentic coding and enterprise work, with a 1M-token context window, 128K maximum output, and adaptive thinking enabled by default.
Claude Sonnet 5
June 30, 2026
Sonnet model for agentic coding, tool use, reasoning, k