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Claude Sonnet 4.6 vs GPT-5.4

Both models are evenly matched

Arena ELO

GPT-5.4

Cheaper

Tie

Faster

Claude Sonnet 4.6

Detailed Comparison

CategoryClaude Sonnet 4.6GPT-5.4
ProviderAnthropic OpenAI
Context Window1M 1M
Input Price ($/1M)$3 $3
Output Price ($/1M)$15 $15
Arena ELO1440 1560 WIN
Coding79.6% SWE-bench unknown
Reasoning72.5% OSWorld unknown
Speed (tokens/sec)~80 t/s WIN~50 t/s
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Sonnet 4.6 or GPT-5.4?

GPT-5.4 is approximately 0% cheaper than Claude Sonnet 4.6 per million tokens.

Which is better for coding, Claude Sonnet 4.6 or GPT-5.4?

Claude Sonnet 4.6 scores 79.6% SWE-bench on coding benchmarks, while GPT-5.4 scores unknown.

Which has a larger context window?

Claude Sonnet 4.6 supports 1M context, while GPT-5.4 supports 1M.

Is Claude Sonnet 4.6 or GPT-5.4 open source?

Claude Sonnet 4.6 is proprietary. GPT-5.4 is proprietary.

Which ranks higher on the Chatbot Arena leaderboard?

GPT-5.4 ranks higher with ELO 1560 vs 1440.