Claude Opus 4.5 Pricing
$5 per 1M input and $25 per 1M output. Free tier: No free tier (API usage billed).
Cost Calculator
Estimated cost:
Full Pricing Matrix
text
| Tier | Input | Output | Unit | Cache Read |
|---|---|---|---|---|
| standard | $5 | $25 | /1M tok | $0.5 |
| batch | $2.5 | $12.5 | /1M tok | — |
Price History
2026-09-24
Anthropic lineup completed (+9 models)
2026-09-24
Opus 4.5–4.8 repriced: $15/$75 → $5/$25 (-67%)
-67%
About Claude Opus 4.5
Legacy Opus generation — repriced down from $15/$75 to match Opus 5 rates.
- Opus 4.5 through 4.8 all share $5/$25 rates
- Big price drop vs original Opus 4 pricing ($15/$75)
- Batch API: 50% discount
Frequently Asked Questions
How much does Claude Opus 4.5 cost?
$5 per 1M input tokens and $25 per 1M output tokens.
Is there a batch discount for Claude Opus 4.5?
Yes — the Anthropic Batch API applies a 50% discount.