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Devstral 2 vs GPT-5.4

Devstral 2 leads in 3 of 8 categories

Arena ELO

GPT-5.4

Cheaper

Devstral 2

Faster

Devstral 2

Detailed Comparison

CategoryDevstral 2GPT-5.4
ProviderMistral OpenAI
Context Window256K 1M WIN
Input Price ($/1M)$0.05 WIN$3
Output Price ($/1M)$0.22 WIN$15
Arena ELON/A 1560 WIN
Codingunknown unknown
Reasoningunknown unknown
Speed (tokens/sec)~100 t/s WIN~50 t/s
Open SourceYes No

Frequently Asked Questions

Which is cheaper, Devstral 2 or GPT-5.4?

Devstral 2 is approximately 99% cheaper than GPT-5.4 per million tokens.

Which is better for coding, Devstral 2 or GPT-5.4?

Devstral 2 scores unknown on coding benchmarks, while GPT-5.4 scores unknown.

Which has a larger context window?

Devstral 2 supports 256K context, while GPT-5.4 supports 1M.

Is Devstral 2 or GPT-5.4 open source?

Devstral 2 is open source. GPT-5.4 is proprietary.