Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude Sonnet 4.5 delivers higher overall intelligence and human-preferred responses (Elo 1,524 vs 1,456), while Claude Sonnet 4.5 leads in SWE-bench software engineering benchmarks (70.1%), while Mistral Large 3 is more budget-friendly at $6/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
Workhorse Anthropic model: most of Opus coding quality at a mid-tier price.
Mistral European flagship with strong function calling.
Currently comparing Claude Sonnet 4.5 vs Mistral Large 3. Alternative family tiers available.
Δ 68 Arena Elo pts
112 tok/s
$6 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Claude Sonnet 4.5 | Mistral Large 3 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +68 | ||
| Coding Elo | — | — | |
| LiveBench | +5.6% | ||
| SWE-bench | +14.7% | ||
| GPQA Diamond | +6.1% | ||
| Time to first token | +50 ms | ||
| Output speed | 88 tok/s | 112 tok/s | +24 tok/s |
| Input price | +$1/1M | ||
| Output price | +$9/1M | ||
| Context window | +872k |
Simulate monthly production API costs in USD (US Dollar).
Mistral Large 3 is estimated to save $170.00/month ($2,040/year).
Higher SWE-bench (70.1%).
Lower output list price ($6/1M).
Lower TTFT (190 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Sonnet 4.5 | Higher SWE-bench (70.1%). |
| High-volume chat | Mistral Large 3 | Lower output list price ($6/1M). |
| Voice / low-latency UI | Mistral Large 3 | Lower TTFT (190 ms). |
| Long-document RAG | Claude Sonnet 4.5 | Larger window (1M). |
| Screenshots / vision | Claude Sonnet 4.5 | Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 4.5). |
Most of Opus 4.5 coding at a mid-tier price. Sonnet 5 replaced it as the buy; 4.5 remains a compare baseline.
Jan 2026. Not the Elo crown. Useful when residency and tools matter more than Arena.
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