Anthropic
Claude Opus 4.1
Flagship Claude model for deep reasoning, coding, and long-horizon agents
Model facts
- Context window
- 2K tokens
- Maximum output
- 32K tokens
- Cheapest paid input
- $7.5 per 1M tokens
- Cheapest paid output
- $37.5 per 1M tokens
- Open weights
- no
- Providers
- 24
Capabilities and modalities
reasoning, tool calling, structured output, attachments, temperature control, text, image, pdf.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| Reasoning | 34.5 | not measured | 80.3 | not measured |
| Non-reasoning | 28.8 | not measured | not measured | not measured |
Observed price history
- 2026-08-24: $7.5 input / $37.5 output per 1M tokens
API providers
- OpenRouter (batch) — model id anthropic/claude-opus-4.1:batch; $7.5 input / $37.5 output per 1M tokens; provider documentation
- Poe — model id anthropic/claude-opus-4.1; $13 input / $64 output per 1M tokens; provider documentation
- Abacus — model id claude-opus-4-1-20250805; $15 input / $75 output per 1M tokens; provider documentation
- Amazon Bedrock — model id anthropic.claude-opus-4-1-20250805-v1:0; $15 input / $75 output per 1M tokens; provider documentation
- Amazon Bedrock (US) — model id us.anthropic.claude-opus-4-1-20250805-v1:0; $15 input / $75 output per 1M tokens; provider documentation
- Azure — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- Azure Cognitive Services — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- Databricks (latest) — model id databricks-claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- DevPass (LLM Gateway) — model id claude-opus-4-1-20250805; $15 input / $75 output per 1M tokens; provider documentation
- DigitalOcean — model id anthropic-claude-4.1-opus; $15 input / $75 output per 1M tokens; provider documentation
- FastRouter — model id anthropic/claude-opus-4.1; $15 input / $75 output per 1M tokens; provider documentation
- Helicone (Anthropic) — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- Kilo Gateway (latest) — model id anthropic/claude-opus-4.1; $15 input / $75 output per 1M tokens; provider documentation
- LLM Gateway (AWS Bedrock) — model id aws-bedrock/claude-opus-4-1-20250805; $15 input / $75 output per 1M tokens; provider documentation
- NanoGPT — model id claude-opus-4-1-20250805; $15 input / $75 output per 1M tokens; provider documentation
- Neon (latest) — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- OpenCode Zen — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- OpenRouter (latest) — model id anthropic/claude-opus-4.1; $15 input / $75 output per 1M tokens; provider documentation
- Pioneer (latest) — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- Requesty (latest) — model id claude-opus-4-1; $15 input / $75 output per 1M tokens; provider documentation
- Vertex — model id claude-opus-4-1@20250805; $15 input / $75 output per 1M tokens; provider documentation
- Vertex (Anthropic) — model id claude-opus-4-1@20250805; $15 input / $75 output per 1M tokens; provider documentation
- ZenMux — model id anthropic/claude-opus-4.1; $15 input / $75 output per 1M tokens; provider documentation
- Qiniu — model id claude-4.1-opus; not published input / not published output per 1M tokens; provider documentation