AnthropicAI company based in United States · 18 registered modelsAnthropic models (18)Claude Haiku 5.5 — 10/2026 · Anthropic current small Haiku modelClaude Sonnet 5.5 — 9/2026 · Anthropic current Sonnet modelClaude Opus 5.5 — 9/2026 · Anthropic flagship modelClaude Fable 5.1 — 9/2026 · Anthropic current top public modelClaude Mythos 5.1 — 9/2026 · Anthropic trusted-access modelClaude Opus 5 — 7/2026 · Anthropic previous-generation OpusClaude Sonnet 5 — 6/2026 · Anthropic previous-generation SonnetClaude Fable 5 — 6/2026 · Anthropic previous-generation top modelClaude Mythos 5 — 6/2026 · Anthropic trusted-partner modelClaude Opus 4.8 — 5/2026 · Anthropic legacy Opus modelClaude Opus 4.7 — 4/2026 · Anthropic legacy Opus modelClaude Mythos Preview — 4/2026 · Anthropic research preview modelClaude Sonnet 4.6 — 2/2026 · Anthropic legacy Sonnet modelClaude Opus 4.6 — 2/2026 · Anthropic legacy Opus modelClaude Opus 4.5 — 11/2025 · Anthropic legacy Opus modelClaude Haiku 4.5 — 10/2025 · Anthropic previous-generation HaikuClaude Sonnet 4.5 — 9/2025 · Anthropic legacy Sonnet modelClaude Opus 3 — 3/2024 · Anthropic third-generation Opus← All AI companies