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Claude Opus 4.5 API price
anthropic/claude-opus-4.5
The cheapest Claude Opus 4.5 API is $3.25/M input at Cheaper Inference (discount marketplace) - all 5 providers compared below, per 1M tokens.
FlagshipAnthropic200K context5 sellers
Input
$3.25
per 1M tokens · Cheaper Inference (discount marketplace)
up to $5.00
Output
$16.25
per 1M tokens · Cheaper Inference (discount marketplace)
up to $25.00
Where to buy it
Cheapest Claude Opus 4.5 API providers compared - 5 sellers, from $3.25/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Cheaper Inference (discount marketplace)35% off | 3.25cheapest | 16.25 | 0.325 | |
| Official - Anthropic | 5.00 | 25.00 | 0.500 | |
| Batch | 2.50 | 12.50 | - | |
| OpenRouter (aggregator) | 5.00 | 25.00 | 0.500 | |
| Batch | 2.50 | 12.50 | 0.250 | |
| OrcaRouter (aggregator) | 5.00 | 25.00 | - | |
| TokenRouter (aggregator) | 5.00 | 25.00 | 0.500 |
1.5× between the cheapest and the dearest of 5 sellers.
Against its tier
- This model$19.50
- Cheapest · GLM 5.3 Flash$0.12
- Tier median · Gemini 3.1 Pro$11.7313
- Dearest · GPT 5.5 Pro (04-23 snapshot)$210.00
#26 of 37 flagship · cheaper than 31%
Details
- Context window
- 200K200,000 tokens
- Developer
- Anthropic
- Intelligence
- 29.1 est. Reasoning
- Sellers
- 51.5× spread
- Cached input
- $0.325where the source publishes one
- Cheapest at
- Cheaper Inference (discount marketplace)
- Combined
- $19.50in + out per 1M
- Last checked
- 2026-10-12