Verified 2025-09-22 · sourced from Anthropic
Claude Opus 4.1 (Legacy) Token Calculator, Pricing & 100K/1M Cost
Check Anthropic Claude Opus 4.1 (Legacy) pricing, estimate 100K and 1M token cost, and size a real API budget before you send a single request. Standard pricing is $15.00 per million input tokens and $75.00 per million output tokens with a 200K token context window.
Quick answer: Claude Opus 4.1 (Legacy) pricing per 1M tokens is $15.00 input and $75.00 output. Context window: 200,000 tokens.
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Context window
200,000 tokens
Input price
$15.00 / 1M
Output price
$75.00 / 1M
Cached input
Not published
Usage scenarios
Compare standard and cached pricing (where available) across common workloads.
| Scenario | Tokens in | Tokens out | Total tokens | Standard cost |
|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0263 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.144 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.405 |
Near-max context run Large document processing approaching the 200K token limit | 176,000 | 24,000 | 200,000 | $4.44 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $2.63 | $78.75 |
| Product launch | 100 | 500,000 | $16.50 | $495.00 |
| Enterprise scale | 500 | 3,000,000 | $105.00 | $3150.00 |
Frequently asked questions
How much does Claude Opus 4.1 (Legacy) cost per 1,000 tokens?
At the published rates of $15.00 per million input tokens and $75.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0330.
What is the context window for Claude Opus 4.1 (Legacy)?
Claude Opus 4.1 (Legacy) supports up to 200,000 tokens (200K), allowing large prompts and retrieval-augmented payloads in a single call.
How fresh is the Claude Opus 4.1 (Legacy) pricing data?
Pricing is sourced from https://claude.com/pricing#api and was last verified on 2025-09-22. The calculator updates automatically when models.json is refreshed.