Claude Opus 5.5 pricing
Anthropic · API id claude-opus-5-5 · verified 2026-10-18
| Input | $4.00 |
| Cached input (cache hit) | $0.20 |
| Cache write | $5.00 |
| Output | $20.00 |
| Batch discount | 50% |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
USD per 1M tokens unless noted. Official source
Estimate your workload on Claude Opus 5.5 →
What Claude Opus 5.5 costs for real workloads
| Workload | Claude Opus 5.5 | Mistral Large 4 | DeepSeek V4 Pro | Grok 4.7 | Gemini 4 Argon |
|---|---|---|---|---|---|
| 10,000 chatbot replies 2,000 input + 400 output tokens each, 50% of the prompt cached | $122 | $15.86 | $29.48 | $49.00 | $61.00 |
| One 30-step coding agent run 12K system + tools prompt, 1K output and 3K tool result per step, caching on | $1.66 | $0.29 | $0.38 | $1.45 | $0.76 |
| 1M documents classified (batch) 600 input + 20 output tokens each, batch API where available | $1,400 | $225 | $871 | $1,320 | $700 |
Compared with the cheapest other flagship models. Change the numbers in the calculator.
Billing notes
Anthropic's recommended default. Cache reads 0.05x input. Fast mode $8/$40. Thinking billed as output. 1M context at standard price (no long-context surcharge). 1h cache write = 2x input. Uses newer tokenizer (~30% more tokens than Claude 4.6 and earlier for same text). US-only inference_geo = 1.1x.
Where Claude Opus 5.5 ranks by use case
Position by cost among all models that fit each workload (1 = cheapest).
- Cheapest LLM for coding agents: #30 of 36 (Per run (cached): $1.66)
- Cheapest LLM for RAG chatbots: #30 of 36 (Per 1,000 answers: $26.30)
- Cheapest LLM for batch classification and extraction: #30 of 36 (Classify 1M docs: $1,400)
- Long-context document analysis (400K tokens): #19 of 29 (10 questions, cached: $3.13)
- Cheapest LLM for high-volume customer support: #30 of 36 (Per 1,000 replies: $10.30)
Counting tokens for a prompt? The token counter estimates Claude Opus 5.5 tokens (Claude 4.7 and later tokenizer, estimated) and input cost.
Head-to-head comparisons
- Claude Opus 5.5 vs GPT-6 Astra
- Claude Opus 5.5 vs Gemini 4 Argon
- Grok 4.7 vs Claude Opus 5.5
- Claude Fable 5.1 vs Claude Opus 5.5
- Claude Opus 5.5 vs Claude Opus 5
- Claude Opus 5.5 vs GPT-5.6 Sol
- Claude Opus 5.5 vs DeepSeek V4 Pro
- Claude Opus 5.5 vs Mistral Large 4
Other Anthropic models
- Claude Fable 5.1: $10.00 / $50.00
- Claude Opus 5: $5.00 / $25.00
- Claude Opus 4.8: $5.00 / $25.00
- Claude Sonnet 4.6: $3.00 / $15.00
- Claude Sonnet 5.5: $2.00 / $10.00
- Claude Sonnet 5: $2.00 / $10.00
- Claude Haiku 4.5: $1.00 / $5.00
- Claude Haiku 5.5: $0.10 / $0.50
FAQ
How much does Claude Opus 5.5 cost per 1M tokens?
Claude Opus 5.5 costs $4.00 per 1M input tokens and $20.00 per 1M output tokens at standard rates (verified 2026-10-18).
Does Claude Opus 5.5 support prompt caching?
Yes. Cached input is billed at $0.20 per 1M tokens, and writing to the cache costs $5.00 per 1M tokens.
Is there a batch discount for Claude Opus 5.5?
Yes. The batch API is 50% cheaper than standard requests.
What is the context window of Claude Opus 5.5?
1,000,000 tokens, with up to 128,000 output tokens.