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Claude Opus 5 API price
claude-opus-5
The cheapest Claude Opus 5 API is $3.50/M input at Cheaper Inference (discount marketplace) - all 4 providers compared below, per 1M tokens.
FlagshipAnthropic1M context4 sellers
Input
$3.50
per 1M tokens · Cheaper Inference (discount marketplace)
up to $5.00
Output
$17.50
per 1M tokens · Cheaper Inference (discount marketplace)
up to $25.00
Where to buy it
Cheapest Claude Opus 5 API providers compared - 4 sellers, from $3.50/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Cheaper Inference (discount marketplace)30% off | 3.50cheapest | 17.50 | 0.350 | |
| Official - Anthropic | 5.00 | 25.00 | 0.500 | |
| Batch | 2.50 | 12.50 | - | |
| Fast mode | 10.00 | 50.00 | - | |
| OrcaRouter (aggregator) | 5.00 | 25.00 | - | |
| TokenRouter (aggregator) | 5.00 | 25.00 | 0.500 |
1.4× between the cheapest and the dearest of 4 sellers.
Against its tier
- This model$21.00
- Cheapest · GLM 5.3 Flash$0.29
- Tier median · Gemini 3.1 Pro$11.90
- Dearest · GPT 5.5 Pro (04-23 snapshot)$210.00
#26 of 38 flagship · cheaper than 32%
Details
- Context window
- 1M1,000,000 tokens
- Developer
- Anthropic
- Intelligence
- 50.7Adaptive Reasoning, Max Effort
- Sellers
- 41.4× spread
- Cached input
- $0.35where the source publishes one
- Cheapest at
- Cheaper Inference (discount marketplace)
- Combined
- $21.00in + out per 1M
- Last checked
- 2026-09-17