AiGanakClaude Opus 5.5 API pricing
Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens at Anthropic's standard list price, checked 26 October 2026. One typical support answer costs about $0.019.
Claude Opus 5.5 (Anthropic) costs $4 input, $0.2 cached input and $20 output per million tokens at standard list price, checked 26 October 2026. Batch: $2 input and $10 output. A typical support answer costs $0.019.
Claude Opus 5.5 price per million tokens
Model ID claude-opus-5-5. Source: Anthropic's pricing page, checked 26 October 2026. AiGanak re-checks every price weekly.
| Standard | Batch | |
|---|---|---|
| Input | $4 | $2 |
| Cached input | $0.2 | $0.1 |
| Output | $20 | $10 |
- Writing to the prompt cache costs $5 per million tokens.
- Batch requests return within 24 hours at the batch rate.
What Claude Opus 5.5 costs per request
Token counts are stated so you can check the arithmetic.
| Task | Tokens | Per request | Per 1,000 | $100 buys |
|---|---|---|---|---|
| Chat reply | 2,000 input tokens, none cached, 300-token reply | $0.014 | $14.00 | 7,142 |
| Support answer | 6,000 input tokens (4,000 cached instructions and help text), 500-token answer | $0.019 | $18.80 | 5,319 |
| Document summary | 20,000-token document, no caching, 800-token summary | $0.096 | $96.00 | 1,041 |
Claude Opus 5.5 compared with similar models
Cost of the same support answer (6,000 input tokens (4,000 cached instructions and help text), 500-token answer). Cheaper is not better unless quality holds on your own examples.
| Model | Input / output per 1M | Support answer | vs Claude Opus 5.5 |
|---|---|---|---|
| Gemini 4 Argon | $2 / $10 | $0.00940 | 50% cheaper |
| Gemini 3.1 Pro (preview) | $2 / $12 | $0.011 | 43% cheaper |
| Claude Opus 5.5 | $4 / $20 | $0.019 | — |
| Claude Fable 5.1 | $10 / $50 | $0.046 | 145% dearer |
| GPT-6 Astra | $10 / $50 | $0.049 | 161% dearer |
See every model on one page in the LLM Price Index, or upload your bill to the free LLM Bill Analyzer to see what Claude Opus 5.5 costs you and what you could save.
Claude Opus 5.5 pricing questions
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How much does Claude Opus 5.5 cost per million tokens?
Claude Opus 5.5 costs $4 input, $0.2 cached input and $20 output per million tokens at Anthropic's standard list price, checked 26 October 2026. Batch processing costs $2 input and $10 output per million tokens. Writing to the prompt cache costs $5 per million tokens.
How much does one request cost on Claude Opus 5.5?
A support answer with 6,000 input tokens (4,000 of them cached) and a 500-token reply costs about $0.019, or $18.80 per 1,000 answers, at standard list prices.
Is Claude Opus 5.5 getting more expensive?
No price change was announced on Anthropic's pricing page when AiGanak checked it on 26 October 2026. AiGanak re-checks prices weekly and emails alerts when one changes.
What is a cheaper alternative to Claude Opus 5.5?
Among flagship models from OpenAI, Anthropic and Google, Gemini 4 Argon is the cheapest for the same support answer at $0.00940 per request, against $0.019 on Claude Opus 5.5. Test quality on your own examples before switching.
Get an email when Claude Opus 5.5 or any other LLM price changes
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