Claude Opus 4.5 API pricing
Standard tier, blended at 3:1 input to output: $10.00 per million tokens.
Anthropic charges $5.00 per million input tokens and $25.00 per million output tokens for Claude Opus 4.5. It is sold in 4 forms, from $5.00 to $10.00 blended; the table below shows what each costs against standard. 3 of the models nearest it in price are cheaper on a blended basis.
Every tier of Claude Opus 4.5
Blended at 3:1 input to output. The last column compares each against the standard tier.
| Source | ||||||||
|---|---|---|---|---|---|---|---|---|
| Standard Standard | claude-opus-4-5 | Anthropic | $5.00 | $25.00 | $0.500 | $10.00 | Standard | ↗ |
| Standard | claude-opus-4.5 | OpenRouter | $5.00 | $25.00 | $0.500 | $10.00 | Same | ↗ |
| Dated snapshot | claude-opus-4-5-20251101 | Anthropic | $5.00 | $25.00 | $0.500 | $10.00 | Same | ↗ |
| Batch | claude-opus-4.5:batch | OpenRouter | $2.50 | $12.50 | $0.250 | $5.00 | −50% | ↗ |
Prices last checked: . Methodology
Which tier to use
What each costs against standard in our data, and the job it is for.
Batch
The batch tier (claude-opus-4.5:batch) is 50% cheaper than standard. Batch requests are queued and answered asynchronously, typically within 24 hours, so it suits work nobody is waiting on: evaluations, back-fills, bulk classification and tagging. Anything a user is waiting on belongs on the standard tier.
Dated snapshots
One dated snapshot (claude-opus-4-5-20251101) is listed at the same price as standard. A snapshot pins the model to one release, while the undated name moves to newer releases when the vendor updates it. Pin a snapshot in production when your prompts depend on exact output; use the undated name to pick up improvements automatically.
Direct or through a reseller
Through OpenRouter, claude-opus-4.5 is the same price as buying direct. A reseller is worth it for one bill across vendors and automatic fallback; buy direct for the vendor's own batch, caching and rate-limit terms.
Against the models nearest in price
Standard tiers, blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| Claude Opus 4.5 This model | Anthropic | $5.00 | $25.00 | 200,000 | $10.00 | ↗ |
| Claude Opus 4.6 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| Claude Opus 4.7 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| Claude Opus 4.8 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| Claude Opus 5 | Anthropic | $5.00 | $25.00 | 1,000,000 | $10.00 | ↗ |
| GPT-5.5 | OpenAI | $5.00 | $30.00 | 1,050,000 | $11.25 | ↗ |
| Claude Opus 5.5 | Anthropic | $4.00 | $20.00 | 1,000,000 | $8.00 | ↗ |
| GPT-5.6 Sol | OpenAI | $4.00 | $20.00 | 922,000 | $8.00 | ↗ |
| GPT-5.6 | OpenAI | $4.00 | $20.00 | 922,000 | $8.00 | ↗ |
Prices last checked: . Methodology
Questions
How much does Claude Opus 4.5 cost per million tokens?
$5.00 per million input tokens and $25.00 per million output tokens, with cached input at $0.500. At a 3:1 input to output mix that blends to $10.00. Checked 28 Oct 2026.
How much cheaper is Claude Opus 4.5 through the Batch API?
claude-opus-4.5:batch costs $2.50 in and $12.50 out per million tokens, 50% cheaper than standard, in exchange for asynchronous delivery.
What would Claude Opus 4.5 cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $750.00 a month on the standard tier, or $375.00 through batch.
What is the context window for Claude Opus 4.5?
200,000 tokens of input, with up to 64,000 tokens of output.
Claude Opus 4.6 · Claude Opus 4.7 · Claude Opus 4.8 · Claude Opus 5 · GPT-5.5 · All Anthropic models · Cost calculator