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Anthropic

Anthropic

Safety-first AI with industry-leading instruction following

Anthropic is an AI safety company founded by ex-OpenAI researchers in 2021. The Claude model family is renowned for its nuanced instruction-following, long-context reasoning, and low rate of hallucinations. Anthropic's Constitutional AI training approach makes Claude particularly strong for professional writing, analysis, and tasks requiring careful judgment.

Founded 2021·12 models·Visit Anthropic

12 Models

Claude Opus 5

Anthropic's flagship for agentic coding

5 cr
Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...
1M ctxVisionTool use

Claude Opus 5 (Fast)

Opus 5 tuned for latency

5 cr
Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode.
1M ctxVisionTool use

Claude Sonnet 5

The balanced Claude 5

3 cr
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
1M ctxVisionTool use

Claude Fable 5

Claude 5 for writing and narrative

5 cr
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...
1M ctxVisionTool use

Claude Opus 4.8

Previous Opus flagship

5 cr
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...
1M ctxVisionTool use

Claude Sonnet 4.5

Long-context Sonnet 4.5

3 cr
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
1M ctxVisionTool use

Claude Haiku 4.5

Fast, affordable Claude

2 cr
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
200k ctxVisionTool use

Claude Opus 4

Anthropic's most intelligent model

5 cr
Claude Opus 4 is Anthropic's frontier model, designed for the most complex and nuanced tasks. It excels at advanced research, intricate reasoning, and long-form writing while maintaining Anthropic's hallmark low hallucination rates.
200k ctxVisionTool use

Claude Sonnet 4.6

Ideal balance of intelligence and speed

3 cr
Claude Sonnet 4.6 strikes the sweet spot between capability and cost. It delivers near-Opus performance on most tasks at a fraction of the price, making it the recommended model for most production applications.
200k ctxVisionTool use

Claude 3.7 Sonnet

Extended thinking for deep reasoning

3 cr
Claude 3.7 Sonnet introduced extended thinking, the ability to reason through problems step by step before responding. This makes it particularly capable at multi-step mathematics, complex coding, and tasks that benefit from deliberate analysis.
200k ctxVisionTool use

Claude Haiku 4.6

Anthropic's fastest and most affordable model

2 cr
Claude Haiku 4.6 is the compact, high-speed member of the Claude 4 family. It delivers rapid responses at the lowest price in the Claude 4 lineup, making it ideal for customer-facing applications, real-time interactions, and high-volume pipelines where cost efficiency matters.
200k ctxVisionTool use

Claude 3.5 Haiku

Claude's fastest and most compact model

1 cr
Claude 3.5 Haiku is Anthropic's fastest model. Despite its compact size, it outperforms Claude 3 Opus on many benchmarks, making it ideal for real-time applications, customer interactions, and high-throughput pipelines.
200k ctxVisionTool use

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