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Claude Sonnet 4.6vsMistral Medium 3.5

Claude Sonnet 4.6 leads 2 of 2 shared benchmarks. Mistral Medium 3.5 is 2x cheaper per token. Claude Sonnet 4.6 has the larger context window (1M tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
2 – 0
Claude Sonnet 4.6 leads
Cheaper per token
Mistral Medium 3.5
2x cheaper, input + output
Larger context
Claude Sonnet 4.6
1M tokens
Provider uptime (30d)
100% · 100%
Anthropic · Mistral AI
Claude Sonnet 4.6
Anthropic · released 2026-02-17
textvision
Context
1M
Max out
128K
Input /1M
$3
Output /1M
$15
Cached /1M
$0.3
Scores
19 · 8 core
Mistral Medium 3.5
Mistral AI · released 2026-04-28
textvision
Context
256K
Max out
Input /1M
$1.5
Output /1M
$7.5
Cached /1M
$0.15
Scores
3 · 2 core
Quality

Benchmark matrix

BenchmarkClaude Sonnet 4.6Mistral Medium 3.5ΔEdge
Reported by both · 2
SWE-bench Verified79.6% 77.6% +2 ptClaude Sonnet 4.6
LMArena Elo1458.3 1420.6 +37.7Claude Sonnet 4.6
Only Claude Sonnet 4.6 reports · 16
GPQA Diamond89.9% not reported
Humanity's Last Exam (no tools)33.2% not reported
ARC-AGI-2 (Verified)58.3% not reported
GDPval-AA1633 not reported
Humanity's Last Exam (with tools)49% not reported
MCP Atlas61.3% not reported
MMMLU89.3% not reported
MMMU-Pro (no tools)74.5% not reported
MMMU-Pro (with tools)75.6% not reported
OSWorld-Verified72.5% not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)85.8% epochnot reported
SimpleQA Verified35.5% epochnot reported
SWE-bench Verified (Epoch AI run)75.2% epochnot reported
Tau2-bench Retail91.7% not reported
Tau2-bench Telecom97.9% not reported
Terminal-Bench 2.059.1% not reported
Only Mistral Medium 3.5 reports · 1
Tau3 Telecomnot reported91.4
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Sonnet 4.6 minus Mistral Medium 3.5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecClaude Sonnet 4.6Mistral Medium 3.5Edge
Context window1M tokens256K tokensClaude Sonnet 4.6
Max output128K tokens
Input price / 1M$3 $1.5 Mistral Medium 3.5
Output price / 1M$15 $7.5 Mistral Medium 3.5
Cached input / 1M$0.3 $0.15 Mistral Medium 3.5
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$18$9Mistral Medium 3.5
Modalitiestext · visiontext · visionTie
Released2026-02-172026-04-28
Cited benchmark scores193
Reliability

Provider status

All providers
More matchups

Claude Sonnet 4.6 vs …

More matchups

Mistral Medium 3.5 vs …

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Which one wins on your data?

Public benchmarks are a starting point. Run Claude Sonnet 4.6 and Mistral Medium 3.5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.