Claude Opus 5.5 API pricing
Recorded standard list rates for Anthropic. Input and output are billed separately.
| Model / service | Tier | Input / 1M | Output / 1M | Observation |
|---|---|---|---|---|
| Claude Opus 5.5 Anthropic | Flagship | $4.00 | $20.00 | 2026-10-05 Verified |
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These are recorded base standard list rates in USD per million tokens. Promotions, long-context surcharges, Batch, cache write/storage and other service charges can change the bill. Use the calculator for its supported workload rules and check the linked provider terms. A carried observation is the last known rate, not a fresh verification.
Claude Opus 5.5: context capacity 1M. Official Anthropic pricing source.
What would 100,000 English words cost?
Using TokenScale’s estimate of 4 tokens per 3 English words, 100,000 words is about 133,333 tokens. Each column below bills only that direction at the recorded base rate; it is not a complete conversation bill. Language, tokenization, context limits and provider terms can change the result. These are calculations, not provider quotes.
| Model | Input only | Output only |
|---|---|---|
| Claude Opus 5.5 | $0.5333 | $2.67 |
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Recent provider-tier observations
This is the last 14 observations of this provider’s tracked tier. The current model label is not applied to earlier nights: this tier can contain previous models. Dated corrections and model changes are explained in Price Moves and the model graveyard. Historical records remain as originally observed.
Flagship tier observations
| Date | Input / 1M | Output / 1M | Status |
|---|---|---|---|
| 2026-09-22 | $10.00 | $50.00 | Verified |
| 2026-09-23 | $10.00 | $50.00 | Verified |
| 2026-09-24 | $10.00 | $50.00 | Verified |
| 2026-09-25 | $4.00 | $20.00 | Verified |
| 2026-09-26 | $4.00 | $20.00 | Verified |
| 2026-09-27 | $4.00 | $20.00 | Verified |
| 2026-09-28 | $4.00 | $20.00 | Verified |
| 2026-09-29 | $4.00 | $20.00 | Verified |
| 2026-09-30 | $4.00 | $20.00 | Verified |
| 2026-10-01 | $4.00 | $20.00 | Verified |
| 2026-10-02 | $4.00 | $20.00 | Verified |
| 2026-10-03 | $4.00 | $20.00 | Carried forward |
| 2026-10-04 | $4.00 | $20.00 | Verified |
| 2026-10-05 | $4.00 | $20.00 | Verified |
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Compare this model
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