o4-mini vs Claude Opus 4.5 (latest)
30-second takeaway
- o4-mini has the cheaper input: $1.1 vs $5 (per 1M tokens, 78% less)
- Same context window (200K tokens)
| o4-mini OpenAI | Claude Opus 4.5 (latest) Anthropic | |
|---|---|---|
| Input | $1.1 | $5 |
| Output | $4.4 | $25 |
| Context | 200K | 200K |
More specs (max output / capabilities)
| max output | 100,000 | 64,000 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | — No |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.