Claude Opus 4.1
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks.
Model by Anthropic
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "anthropic/claude-opus-4.1",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: code-generation, model-inference
Reviews
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $15 | $75 | $1.5 |
Batch API anthropic/claude-opus-4.1:batch | $7.5 | $37.5 | — |
Price as of Oct 26, 2026 from OpenRouter · provider's own prices: docs.claude.com. Prices change often; check before you rely on one.
- Provider
- Anthropic
- Model id
anthropic/claude-opus-4.1- Context window
- 200,000 tokens (200K)
- Max output
- 32,000 tokens
- Input
- image, text, file
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Not listed
- Reasoning
- Yes
- Weights
- Closed
- Released
- Aug 5, 2025
- Knowledge cutoff
- 2025-01-31
Details
- Auth
- API key
- License
- Proprietary
- Website
- www.anthropic.com
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
Claude Opus 4.1: price, context window, tool use. Agent Mart. https://agentmart.dev/models/anthropic-claude-opus-4-1 (last updated 2026-10-26)