# Claude Sonnet 4.5

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 improvements across system design, code security, and specification adherence. The model is designed for extended autonomous operation, maintaining task continuity across sessions and providing fact-based progress tracking.

Sonnet 4.5 also introduces stronger agentic capabilities, including improved tool orchestration, speculative parallel execution, and more efficient context and memory management. With enhanced context tracking and awareness of token usage across tool calls, it is particularly well-suited for multi-context and long-running workflows. Use cases span software engineering, cybersecurity, financial analysis, research agents, and other domains requiring sustained reasoning and tool use.

## Model Information

- **Organization**: [Anthropic](/llm.txt)
- **Slug**: claude-sonnet-4-5
- **Available at Providers**: 73
- **Release Date**: September 29, 2025

### Benchmark Scores
- Weekly: 6.15
- AIME 2025: 0.87
- GPQA: 0.834
- Terminal: 0.5

## Providers

| Provider | Name | $ Input (per 1M) | $ Output (per 1M) | Free | Link |
|----------|------|-----------------|------------------|------|------|
| [AIHubMix](/llm/aihubmix.txt) | claude-sonnet-4-5 | 3.30 | 16.50 |  | [View](https://aihubmix.com/model/claude-sonnet-4-5) |
| [AIHubMix](/llm/aihubmix.txt) | claude-sonnet-4-5-think | 3.30 | 16.50 |  | [View](https://aihubmix.com/model/claude-sonnet-4-5-think) |
| [AIMLAPI](/llm/aimlapi.txt) | Claude 4.5 Sonnet |  |  |  |  |
| [Factory.ai](/llm/factoryai.txt) | Claude Sonnet 4.5 |  |  |  |  |
| [Helicone](/llm/helicone.txt) | Anthropic: Claude Sonnet 4.5 (20250929) | 3.00 | 15.00 |  | [View](https://www.helicone.ai/model/claude-sonnet-4-5-20250929) |
| [Mammouth AI](/llm/mammouth.txt) | claude-sonnet-4-5 | 3.00 | 15.00 |  |  |
| [GitHub Copilot](/llm/githubcopilot.txt) | Claude Sonnet 4.5 | 0.00 | 0.00 | Yes |  |
| [Abacus](/llm/abacus.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Google Vertex AI](/llm/googlevertex.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Azure OpenAI](/llm/azure.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Cloudflare AI Gateway](/llm/cloudflareaigateway.txt) | Claude Sonnet 4.5 (latest) | 3.00 | 15.00 |  |  |
| [Anthropic](/llm/anthropic.txt) | Claude Sonnet 4.5 (latest) | 3.00 | 15.00 |  |  |
| [Anthropic](/llm/anthropic.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Azure AI Services](/llm/azurecognitiveservices.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Nano-GPT](/llm/nanogpt.txt) | Claude Sonnet 4.5 |  |  |  |  |
| [Nano-GPT](/llm/nanogpt.txt) | Claude Sonnet 4.5 Thinking |  |  |  |  |
| [OpenRouter](/llm/openrouter.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  | [View](https://openrouter.ai/anthropic/claude-4.5-sonnet-20250929) |
| [OpenCode Zen](/llm/opencode.txt) | claude-sonnet-4-5 | 6.00 | 22.50 |  |  |
| [Poe](/llm/poe.txt) | Claude-Sonnet-4.5 | 2.60 | 13.00 |  | [View](https://poe.com/claude-sonnet-4.5/api) |
| [Requesty](/llm/requesty.txt) |  | 3.00 | 15.00 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.00 | 15.00 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.30 | 16.50 |  |  |
| [Requesty](/llm/requesty.txt) |  | 3.00 | 15.00 |  |  |
| [ValorGPT](/llm/valorgpt.txt) | Claude Sonnet 4.5 |  |  |  | [View](https://www.valorgpt.com/models/anthropic-claude-sonnet-4.5) |
| [Venice](/llm/venice.txt) | Claude Sonnet 4.5 | 3.75 | 18.75 |  |  |
| [Vercel AI Gateway](/llm/vercel.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [ZenMUX](/llm/zenmux.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Firmware](/llm/firmware.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Glama](/llm/glama.txt) | claude-sonnet-4-5-20250929 | 3.00 | 15.00 |  | [View](https://glama.ai/gateway/models/claude-sonnet-4-5-20250929) |
| [LangDB](/llm/langdb.txt) | claude-sonnet-4.5 |  |  |  | [View](https://langdb.ai/app/models) |
| [Zed](/llm/zed.txt) | Claude Sonnet 4.5 | 3.30 | 16.50 |  | [View](https://zed.dev/docs/ai/models) |
| [302.AI](/llm/302ai.txt) | claude-sonnet-4-5-20250929 | 3.00 | 15.00 |  | [View](https://302ai-en.apifox.cn/api-207705109) |
| [Kilo Code](/llm/kilocode.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [GMI Cloud](/llm/gmi.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Roo Code](/llm/roocode.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  | [View](https://roocode.com) |
| [Near AI](/llm/near.txt) |  | 3.00 | 15.50 |  |  |
| [RedPill](/llm/redpill.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Google Vertex AI](/llm/googlevertex.txt) | Claude Sonnet 4.5 |  |  |  |  |
| [Perplexity AI](/llm/perplexity.txt) | Claude Sonnet 4.5 | 3.00 | 15.00 |  | [View](https://docs.perplexity.ai/docs/grounded-llm/responses/models) |
| [Blackbox AI](/llm/blackboxai.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [Cursor](/llm/cursor.txt) | Claude 4.5 Sonnet |  |  |  | [View](https://cursor.com/docs/models) |
| [Cursor](/llm/cursor.txt) | Claude 4.5 Sonnet (Thinking) |  |  |  | [View](https://cursor.com/docs/models) |
| [FastRouter](/llm/fastrouter.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  | [View](https://fastrouter.ai/models/anthropic/claude-4.5-sonnet) |
| [Helicone](/llm/helicone.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  | [View](https://www.helicone.ai/model/claude-4.5-sonnet) |
| [JetBrains AI](/llm/jetbrains.txt) | Claude 4.5 Sonnet |  |  |  | [View](https://www.jetbrains.com/help/ai-assistant/supported-llms.html) |
| [302.AI](/llm/302ai.txt) | claude-sonnet-4-5-20250929-thinking | 3.00 | 15.00 |  | [View](https://302ai-en.apifox.cn/api-207705109) |
| [Cortecs](/llm/cortecs.txt) | Claude 4.5 Sonnet | 3.26 | 16.30 |  |  |
| [Arena AI](/llm/arenaai.txt) |  |  |  |  |  |
| [Jiekou.AI](/llm/jiekou.txt) | claude-sonnet-4-5-20250929 | 2.70 | 13.50 |  |  |
| [Warp](/llm/warp.txt) | Claude Sonnet 4.5 |  |  |  | [View](https://docs.warp.dev/agent-platform/capabilities/model-choice) |
| [CommonStack](/llm/commonstack.txt) | Anthropic: Claude Sonnet 4.5 | 3.00 | 15.00 |  |  |
| [RouterLink](/llm/routerlink.txt) | Claude Sonnet 4.5 |  |  |  |  |
| [CometAPI](/llm/cometapi.txt) | Claude Sonnet 4.5 | 2.40 | 12.00 |  |  |
| [Windsurf](/llm/windsurf.txt) | Claude Sonnet 4.5 |  |  |  |  |
| [Windsurf](/llm/windsurf.txt) | Claude Sonnet 4.5 (Thinking) |  |  |  |  |
| [Windsurf](/llm/windsurf.txt) | Claude Sonnet 4.5 1M |  |  |  |  |
| [Qiniu](/llm/qiniuai.txt) | Claude 4.5 Sonnet |  |  |  |  |
| [QiHang](/llm/qihangai.txt) | Claude Sonnet 4.5 | 0.43 | 2.14 |  |  |
| [ApiYI](/llm/apiyi.txt) | claude-sonnet-4-5-20250929-thinking |  |  |  |  |
| [ApiYI](/llm/apiyi.txt) | claude-sonnet-4-5-20250929 |  |  |  |  |
| [WaveSpeed AI](/llm/wavespeed.txt) | claude-sonnet-4.5 | 3.30 | 16.50 |  |  |
| [ZO Computer](/llm/zocomputer.txt) | Sonnet 4.5 |  |  |  |  |
| [MegaNova](/llm/meganova.txt) | Claude-Sonnet-4.5 | 2.40 | 12.00 |  | [View](https://console.meganova.ai/serverless/anthropic/claude-sonnet-4-5-20250929) |
| [Writingmate](/llm/writingmate.txt) | Anthropic: Claude Sonnet 4.5 |  |  |  | [View](https://writingmate.ai/models/anthropic/claude-sonnet-4.5) |
| [LLM Stats](/llm/llmstats.txt) | Claude Sonnet 4.5 |  |  |  |  |

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