Claude Opus 5.5 API Pricing — $4.00/M input, $20.00/M output
Anthropic's flagship model for the most demanding reasoning, coding, and agentic work.
Full specs, context window and API limits →How much does Claude Opus 5.5 cost per million tokens?
Claude Opus 5.5, from Anthropic, charges $4.00 per million input tokens and $20.00 per million output tokens — $8.00 per million blended at a 3:1 input:output ratio. That makes it pricier than GPT-5.6 Sol on a blended-token basis.
How much does Claude Opus 5.5 cost per 1,000 requests?
Computed from generated token pricing. Each row assumes the listed input and output tokens per request; this model has no measured verbosity factor, so the unadjusted output estimate is shown.
| Request shape | Input tokens | Output tokens | Cost / 1,000 requests |
|---|---|---|---|
| Short | 100 | 50 | $1.4000 |
| Medium | 1,000 | 500 | $14.0000 |
| Long | 4,000 | 2,000 | $56.0000 |
Formula: ((input price × input tokens) + (output price × output tokens × verbosity factor)) ÷ 1,000,000 × 1,000. Assumptions: short 100/50, medium 1,000/500, long 4,000/2,000 input/output tokens per request. Unadjusted — no measured verbosity factor is available.
How fast is Claude Opus 5.5?
How much does Claude Opus 5.5 cost at scale?
| Tokens / month | Est. cost (blended 3:1) |
|---|---|
| 100,000 | $0.80 |
| 1,000,000 | $8.00 |
| 10,000,000 | $80.00 |
| 100,000,000 | $800.00 |
How does Claude Opus 5.5 compare with other models?
What is Claude Opus 5.5 best for?
What should you explore next for Claude Opus 5.5?
Which Claude Opus 5.5 head-to-head comparisons are available?
What are common questions about Claude Opus 5.5?
Is Claude Opus 5.5 cheaper than GPT-5.6 Sol?
Claude Opus 5.5 costs $8.00/M blended tokens, GPT-5.6 Sol costs $8.00/M — GPT-5.6 Sol is cheaper.
How much does 1 million tokens cost with Claude Opus 5.5?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $8.00. Pure input costs $4.00/M; pure output costs $20.00/M.
What does Claude Opus 5.5 cost at high volume?
At 100 million blended tokens a month, Claude Opus 5.5 costs approximately $800.00. See the cost-at-scale table below for other volumes.