Claude Opus 4.1 Pricing
$15 per 1M input and $75 per 1M output. Free tier: No free tier.
Cost Calculator
Estimated cost:
Claude Opus 4.1 Price Table
| Standard | |
|---|---|
| Input /1M tokens | $15 |
| Output /1M tokens | $75 |
| Context cache /1M | $18.75 |
Price History
2026-10-26
Medium-priority models + comparison pages expansion
About Claude Opus 4.1
Legacy Opus generation — the last Opus at original $15/$75 pricing before the big repricing.
- Original Opus pricing (not repriced)
- Cache write $18.75
- Batch API: 50% discount
Frequently Asked Questions
How much does Claude Opus 4.1 cost?
$15 per 1M input and $75 per 1M output — original pricing, not repriced.
Is Opus 4.1 cheaper than Opus 5?
No — Opus 4.1 is $15/$75 while Opus 5 is $5/$25. The newer model is 67% cheaper.