AI provider

Anthropic

Anthropic is the AI company behind Claude. Founded in January 2021, it is led by CEO Dario Amodei and President Daniela Amodei. Its principal executive offices are in San Francisco. Anthropic operates as a Delaware public benefit corporation.

Explore models

Models & tools

Claude Opus 5.5
Anthropic · Claude Opus
A model for extended coding and knowledge work with vision and computer-use support.
Launch date 22 September 2026API
Claude Haiku 5.5
Anthropic · Claude Haiku
A model for high-volume classification, extraction and routing tasks.
Launch date 7 October 2026API
Claude Sonnet 5.5
Anthropic · Claude Sonnet
A model for coding, writing and agent tasks with configurable reasoning.
Launch date 28 September 2026API
Claude Sonnet 5
Anthropic · Claude Sonnet
Claude Sonnet 5 is an active earlier Sonnet release with adaptive thinking.
Launch date 30 June 2026API
Claude Fable 5.1
Anthropic · Claude Fable
A reasoning model for complex tasks and work that spans many steps.
Launch date 1 September 2026API
Claude Opus 5
Anthropic · Claude Opus
A July 2026 Opus model for reasoning, coding and visual understanding.
Launch date 24 July 2026API
Claude Sonnet 4.6
Anthropic · Claude Sonnet
Claude Sonnet 4.6 remains active with a one-million-token context and adaptive thinking.
Launch date 17 February 2026API
Claude Opus 4.8
Anthropic · Claude Opus
An earlier Opus model for coding, document processing and agent workflows.
Launch date 28 May 2026API
Claude Sonnet 4.5
Anthropic · Claude Sonnet
A deprecated Sonnet model for reasoning, coding and visual understanding.
Launch date 29 September 2025Deprecated API; check access detailsAPI
Claude Haiku 4.5
Anthropic · Claude Haiku
An earlier Haiku model with manual reasoning budgets.
Launch date 15 October 2025API
Claude Opus 4.6
Anthropic · Claude Opus
Claude Opus 4.6 expanded the Opus context window and introduced adaptive reasoning in this release line.
Launch date 5 February 2026API
Claude Fable 5
Anthropic · Claude Fable
Claude Fable 5 is the earlier Fable release for extended reasoning.
Launch date 9 June 2026API
Claude Opus 4.7
Anthropic · Claude Opus
Claude Opus 4.7 is an active coding and reasoning model with higher-resolution image processing than Opus 4.6.
Launch date 16 April 2026API
Claude Opus 4.5
Anthropic · Claude Opus
Claude Opus 4.5 is an active earlier Opus model with manual extended thinking.
Launch date 24 November 2025API
Claude Mythos 5.1
Anthropic · Claude Mythos
Claude Mythos 5.1 gives verified organizations access to the Fable 5.1 model for defensive cybersecurity.
Launch date 1 September 2026Restricted accessAPI
Claude Mythos 5
Anthropic · Claude Mythos
Claude Mythos 5 is the verified-access offering of Claude Fable 5 for defensive cybersecurity.
Launch date 9 June 2026Restricted accessAPI
Claude Mythos Preview
Anthropic · Claude Mythos
A restricted-access general-purpose model with cybersecurity capabilities, introduced for Project Glasswing.
Launch date not confirmedDeprecated API; check access detailsAPI