token.app › Compare › o3 Pro vs Claude Opus 5
o3 Pro vs Claude Opus 5
Claude Opus 5 is 3.5× cheaper per token on a blended 3:1 basis. Claude Opus 5 accepts the larger context window (1M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Pro | Claude Opus 5 | |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Input $/1M | $20.00 | $5.00 |
| Output $/1M | $80.00 | $25.00 |
| Blended $/1M | $35.00 | $10.00 |
| Context window | 200K | 1M |
| Max output | 100K | 128K |
| Released | Jun 2025 | Jul 2026 |
| Licence | Proprietary | Proprietary |
Choose o3 Pro if…
- No clear advantage on the data we hold.
Choose Claude Opus 5 if…
- Costs less per token — $10.00 vs $35.00 blended
- Larger context window (1M)
- Newer model (released Jul 2026)
FAQ
Which is better, o3 Pro or Claude Opus 5?
We do not hold independently-run benchmark scores covering both o3 Pro and Claude Opus 5, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Claude Opus 5?
Claude Opus 5 is cheaper: $10.00 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $5.00. Output alone: $80.00 vs $25.00.
What context windows do o3 Pro and Claude Opus 5 have?
o3 Pro: 200,000 tokens. Claude Opus 5: 1,000,000 tokens.
Who makes o3 Pro and Claude Opus 5?
o3 Pro is made by OpenAI. Claude Opus 5 is made by Anthropic.