Devstral 2 vs GPT-5.6 Sol

Devstral 2 leads in 4 of 8 categories

Arena ELO

Tie

Cheaper

Devstral 2

Faster

Devstral 2

Detailed Comparison

Category	Devstral 2	GPT-5.6 Sol
Provider	Mistral	OpenAI
Context Window	256K WIN	128K
Input Price ($/1M)	$0.05 WIN	N/A
Output Price ($/1M)	$0.22 WIN	N/A
Arena ELO	N/A	N/A
Coding	unknown	N/A
Reasoning	unknown	N/A
Speed (tokens/sec)	~100 t/s WIN	N/A
Open Source	Yes	No

Frequently Asked Questions

Which is better for coding, Devstral 2 or GPT-5.6 Sol?

Devstral 2 scores unknown on coding benchmarks, while GPT-5.6 Sol scores N/A.

Which has a larger context window?

Devstral 2 supports 256K context, while GPT-5.6 Sol supports 128K.

Is Devstral 2 or GPT-5.6 Sol open source?

Devstral 2 is open source. GPT-5.6 Sol is proprietary.

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What We Know About GPT-5.6's Release Date

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