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Compare / head-to-head

Mistral Small 4vsSonar Reasoning Pro

Mistral Small 4 and Sonar Reasoning Pro do not yet share a public benchmark, so quality cannot be compared apples-to-apples. Mistral Small 4 is 13.3x cheaper per token. Mistral Small 4 has the larger context window (256K tokens).

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

Shared benchmarks
0
no overlap yet
Cheaper per token
Mistral Small 4
13.3x cheaper, input + output
Larger context
Mistral Small 4
256K tokens
Provider uptime (30d)
100% · 100%
Mistral AI · Perplexity
Mistral Small 4
Mistral AI · released 2026-03-16
textvision
Context
256K
Max out
Input /1M
$0.15
Output /1M
$0.6
Cached /1M
$0.015
Scores
3 · 2 core
text
Context
128K
Max out
Input /1M
$2
Output /1M
$8
Cached /1M
Scores
0 · 0 core
Quality

Benchmark matrix

BenchmarkMistral Small 4Sonar Reasoning ProΔEdge
Reported by both · 0
No public benchmark is reported for both models yet.
Only Mistral Small 4 reports · 3
GPQA Diamond71.2% not reported
MMLU-Pro78% not reported
Artificial Analysis Long Context Reasoning0.72 not reported
Only Sonar Reasoning Pro reports · 0
Sonar Reasoning Pro reports nothing Mistral Small 4 does not.
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 Mistral Small 4 minus Sonar Reasoning Pro 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

SpecMistral Small 4Sonar Reasoning ProEdge
Context window256K tokens128K tokensMistral Small 4
Max output
Input price / 1M$0.15 $2 Mistral Small 4
Output price / 1M$0.6 $8 Mistral Small 4
Cached input / 1M$0.015
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$0.75$10Mistral Small 4
Modalitiestext · visiontextMistral Small 4
Released2026-03-16
Cited benchmark scores30
Reliability

Provider status

All providers
Built by Respan
Which one wins on your data?

Public benchmarks are a starting point. Run Mistral Small 4 and Sonar Reasoning Pro on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.