Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Sonnet 5
94
Mistral Medium 3.5 128B
76
Pick Claude Sonnet 5 if you want the stronger benchmark profile. Mistral Medium 3.5 128B only becomes the better choice if coding is the priority or you want the cheaper token bill.
Coding
+14.4 difference
Claude Sonnet 5
Mistral Medium 3.5 128B
$3 / $15
$1.5 / $7.5
N/A
N/A
N/A
N/A
1M
256K
Pick Claude Sonnet 5 if you want the stronger benchmark profile. Mistral Medium 3.5 128B only becomes the better choice if coding is the priority or you want the cheaper token bill.
Claude Sonnet 5 is clearly ahead on the provisional aggregate, 94 to 76. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Sonnet 5 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $1.50 input / $7.50 output per 1M tokens for Mistral Medium 3.5 128B. That is roughly 2.0x on output cost alone. Claude Sonnet 5 gives you the larger context window at 1M, compared with 256K for Mistral Medium 3.5 128B.
Claude Sonnet 5 is ahead on BenchLM's provisional leaderboard, 94 to 76.
Mistral Medium 3.5 128B has the edge for coding in this comparison, averaging 77.6 versus 63.2. Claude Sonnet 5 stays close enough that the answer can still flip depending on your workload.
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