Claude Opus 4.8 vs o3
Both models are evenly matched
Arena ELO
o3
Cheaper
Claude Opus 4.8
Faster
o3
Detailed Comparison
| Category | Claude Opus 4.8 | o3 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context Window | 200K | 200K |
| Input Price ($/1M) | $5 WIN | $10 |
| Output Price ($/1M) | $25 WIN | $40 |
| Arena ELO | N/A | 1350 WIN |
| Coding | N/A | unknown |
| Reasoning | N/A | unknown |
| Speed (tokens/sec) | N/A | ~30 t/s WIN |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Claude Opus 4.8 or o3?
Claude Opus 4.8 is approximately 40% cheaper than o3 per million tokens.
Which is better for coding, Claude Opus 4.8 or o3?
Claude Opus 4.8 scores N/A on coding benchmarks, while o3 scores unknown.
Which has a larger context window?
Claude Opus 4.8 supports 200K context, while o3 supports 200K.
Is Claude Opus 4.8 or o3 open source?
Claude Opus 4.8 is proprietary. o3 is proprietary.
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