Claude 1.0

No priced offering is listed for this model yet.

Family

claude

Not stated on Anthropic’s pages: max input, input modalities, output modalities, reasoning, reasoning efforts, reasoning can be off, max thinking budget, tool use, structured output, built-in tools, knowledge cutoff, aliases.

This model isn’t on any leaderboard we cite yet.

No changes recorded yet.

• Claude model deprecations (opens in a new tab) platform.claude.com · checked Nov 4, 2026
• Introducing Claude \ Anthropic (opens in a new tab) anthropic.com · checked Oct 15, 2026

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Snapshots, the same family and other models from this provider

• Claude Fable 5.2
• Claude Mythos 5.2
• Claude Haiku 5.5
• Claude Sonnet 5.5
• Claude Opus 5.5
• Claude Fable 5.1
• Claude Mythos 5.1
• Claude Opus 5