# Anthropic Models via Hanzo AI — 24 models > Access 24 Anthropic models via Hanzo's OpenAI-compatible API. Single API key, unified billing, and global low-latency routing. [Models](https://hanzo.ai/models)/Anthropic # Anthropic Models via Hanzo AI 24 models available Access all 24 Anthropic models through Hanzo's OpenAI-compatible API. One key, one bill, no rate limit juggling. [Get API Access](https://hanzo.ai/signup)[API Docs](https://docs.hanzo.ai) Instant Guest API Keyguest_temp_key No account or sign up required Test right now from your terminal. No credentials needed: cURL · instant guest request Copy ``` curl https://api.hanzo.ai/v1/chat/completions \ -H "Authorization: Bearer guest_temp_key" \ -d '{"model": "zen-free", "messages": [{"role": "user", "content": "hello"}]}' ``` [Claude Fable 51MClaude 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...text](https://hanzo.ai/models/anthropic/claude-fable-5) [Claude Fable 5.11MClaude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...text](https://hanzo.ai/models/anthropic/claude-fable-5.1) [Claude Fable 5.1 (batch)1MClaude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...text](https://hanzo.ai/models/anthropic/claude-fable-5.1:batch) [Claude Haiku 4.5200KClaude 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...text](https://hanzo.ai/models/anthropic/claude-haiku-4.5) [Claude Haiku 5.51MClaude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...text](https://hanzo.ai/models/anthropic/claude-haiku-5.5) [Claude Haiku 5.5 (batch)1MClaude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...text](https://hanzo.ai/models/anthropic/claude-haiku-5.5:batch) [Claude Opus 4.1200KClaude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...text](https://hanzo.ai/models/anthropic/claude-opus-4.1) [Claude Opus 4.5200KClaude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...text](https://hanzo.ai/models/anthropic/claude-opus-4.5) [Claude Opus 4.61MOpus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...text](https://hanzo.ai/models/anthropic/claude-opus-4.6) [Claude Opus 4.71MOpus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents. Building on the coding and agentic strengths of Opus 4.6, it delivers stronger performance on...text](https://hanzo.ai/models/anthropic/claude-opus-4.7) [Claude Opus 4.81MClaude 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...text](https://hanzo.ai/models/anthropic/claude-opus-4.8) [Claude Opus 51MClaude 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...text](https://hanzo.ai/models/anthropic/claude-opus-5) [Claude Opus 5.51MClaude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...text](https://hanzo.ai/models/anthropic/claude-opus-5.5) [Claude Opus 5.5 (batch)1MClaude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...text](https://hanzo.ai/models/anthropic/claude-opus-5.5:batch) [Claude Opus 5 (batch)1MClaude 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...text](https://hanzo.ai/models/anthropic/claude-opus-5:batch) [Claude Sonnet 4.51MClaude 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...text](https://hanzo.ai/models/anthropic/claude-sonnet-4.5) [Claude Sonnet 4.61MSonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...text](https://hanzo.ai/models/anthropic/claude-sonnet-4.6) [Claude Sonnet 51MSonnet 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,...text](https://hanzo.ai/models/anthropic/claude-sonnet-5) [Claude Sonnet 5.51MClaude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...text](https://hanzo.ai/models/anthropic/claude-sonnet-5.5) [Claude Sonnet 5.5 (batch)1MClaude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...text](https://hanzo.ai/models/anthropic/claude-sonnet-5.5:batch) [Claude Fable Latest1MThis model always redirects to the latest model in the Claude Fable family.text](https://hanzo.ai/models/anthropic/claude-fable-latest) [Claude Haiku Latest1MThis model always redirects to the latest model in the Claude Haiku family.text](https://hanzo.ai/models/anthropic/claude-haiku-latest) [Claude Opus Latest1MThis model always redirects to the latest model in the Claude Opus family.text](https://hanzo.ai/models/anthropic/claude-opus-latest) [Claude Sonnet Latest1MThis model always redirects to the latest model in the Claude Sonnet family.text](https://hanzo.ai/models/anthropic/claude-sonnet-latest) ## Use Anthropic models via Hanzo One key. One bill. Works with every SDK you already have. [Start Free](https://platform.hanzo.ai/api-keys)[Browse All Models](https://hanzo.ai/models)