Claude Opus 4.1

Q: What is the API model name for Claude Opus 4.1?

Use claude-opus-4-1 in API calls to Anthropic. The context window is 200K tokens, and a response can run to 32,000 output tokens.

Claude Opus 4.1 cost per million tokens is $15 for input and $75 for output.

Provider: Anthropic
API model name: claude-opus-4-1
Status: Deprecated
Input, $ per 1M tokens: $15.00
Cached input, $ per 1M tokens: $1.50
Output, $ per 1M tokens: $75.00
Sample request (10K in, 2K out), $: $0.30
Context window, tokens: 200K
Price checked on: October 31, 2026
Official pricing page: platform.claude.com

These are Anthropic’s standard rates. Anthropic retired it on the Claude API on August 5, 2026. Cached input is billed at $1.50 per million tokens. A request with 10,000 input tokens and 2,000 output tokens costs about $0.30 before caching or batch discounts, the most of any Claude model in this table. The API model name is claude-opus-4-1, and the context window is 200K tokens. Claude Opus 5.5 runs the same request for about $0.08.

Cache writes, $ per 1M tokens: $18.75
Max output, tokens: 32K
Input types: Text, image, file
Open weights: No
Batch pricing: 50% off input and output tokens
Pricing notes: Anthropic deprecated claude-opus-4-1-20250805 on June 5, 2026 and retired it on the Claude API on August 5, 2026.
Sources: Page URL Checked
Claude API pricing https://platform.claude.com/docs/en/about-claude/pricing 2026-10-19
Claude model deprecations https://platform.claude.com/docs/en/about-claude/model-deprecations 2026-10-19
OpenRouter model listing (context and output limits) https://openrouter.ai/models 2026-09-29

Page	URL	Checked
Claude API pricing	https://platform.claude.com/docs/en/about-claude/pricing	2026-10-19
Claude model deprecations	https://platform.claude.com/docs/en/about-claude/model-deprecations	2026-10-19
OpenRouter model listing (context and output limits)	https://openrouter.ai/models	2026-09-29

Price changes for this model

Effective	Change	Was	Now	Official source
August 5, 2026	Retirement	Deprecated since June 5, 2026: $15 input, $1.50 cached input, $75 output per 1M tokens	Retired on the Claude API; claude-opus-4-1-20250805 no longer accepts requests there	platform.claude.com

Questions

How much does the Claude Opus 4.1 API cost?

Claude Opus 4.1 costs $15 per million input tokens and $75 per million output tokens on Anthropic’s own API. Cached input costs $1.50 per million tokens.

What is the API model name for Claude Opus 4.1?

Use claude-opus-4-1 in API calls to Anthropic. The context window is 200K tokens, and a response can run to 32,000 output tokens.

What does one Claude Opus 4.1 request cost?

A request with 10,000 input tokens and 2,000 output tokens costs about $0.30 at standard rates, before caching or batch discounts. Batch requests get 50% off input and output tokens.

Is Claude Opus 4.1 still available?

Anthropic deprecated claude-opus-4-1-20250805 on June 5, 2026 and retired it on the Claude API on August 5, 2026.

Sources

Prices are read from each provider’s official pricing page: OpenAI, Anthropic, Google Gemini API, xAI, DeepSeek and Mistral AI. Context and output limits that a provider does not publish come from OpenRouter’s model listing. Each model’s Sources field lists the pages used and the date each was checked. How we check prices · Price change log