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Claude Opus 4.7 vs o3

o3 leads in 4 of 8 categories

Arena ELO

Claude Opus 4.7

Cheaper

o3

Faster

o3

Detailed Comparison

CategoryClaude Opus 4.7o3
ProviderAnthropic OpenAI
Context Window128K 200K WIN
Input Price ($/1M)N/A $10 WIN
Output Price ($/1M)N/A $40 WIN
Arena ELO1567 WIN1350
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~30 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is better for coding, Claude Opus 4.7 or o3?

Claude Opus 4.7 scores N/A on coding benchmarks, while o3 scores unknown.

Which has a larger context window?

Claude Opus 4.7 supports 128K context, while o3 supports 200K.

Is Claude Opus 4.7 or o3 open source?

Claude Opus 4.7 is proprietary. o3 is proprietary.

Which ranks higher on the Chatbot Arena leaderboard?

Claude Opus 4.7 ranks higher with ELO 1567 vs 1350.

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