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Claude Opus 4.5 vs Devstral 2

Devstral 2 leads in 4 of 8 categories

Arena ELO

Claude Opus 4.5

Cheaper

Devstral 2

Faster

Devstral 2

Detailed Comparison

CategoryClaude Opus 4.5Devstral 2
ProviderAnthropic Mistral
Context Window200K 256K WIN
Input Price ($/1M)$5 $0.05 WIN
Output Price ($/1M)$25 $0.22 WIN
Arena ELO1380 WINN/A
Coding80.9% SWE-bench unknown
Reasoningunknown unknown
Speed (tokens/sec)~35 t/s ~100 t/s WIN
Open SourceNo Yes

Frequently Asked Questions

Which is cheaper, Claude Opus 4.5 or Devstral 2?

Devstral 2 is approximately 99% cheaper than Claude Opus 4.5 per million tokens.

Which is better for coding, Claude Opus 4.5 or Devstral 2?

Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while Devstral 2 scores unknown.

Which has a larger context window?

Claude Opus 4.5 supports 200K context, while Devstral 2 supports 256K.

Is Claude Opus 4.5 or Devstral 2 open source?

Claude Opus 4.5 is proprietary. Devstral 2 is open source.

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