Compare / Qwen3 8B vs Mistral Small 3
Qwen3 8B vs Mistral Small 3
Which is cheaper, which is more capable, and which does better at each kind of work, from 11 results on 3 sources that measured both models.
Qwen3 8B or Mistral Small 3? The short answer
- Mistral Small 3 is cheaper: $0.058 against $0.20 per million tokens, 3.5 times less.
- They score about the same on the Artificial Analysis Intelligence Index (7.3 and 6.7).
- On our business benchmarks, Qwen3 8B ranks higher for reasoning and knowledge and sticking to the facts.
- On our business benchmarks, Mistral Small 3 ranks higher for writing.
At a glance
| Qwen3 8B | Mistral Small 3 | |
|---|---|---|
| Price per million tokens | $0.12 in · $0.46 out | $0.050 in · $0.080 out |
| Blended (3 in : 1 out) | $0.20 | $0.058 |
| Cheapest host, blended | – | – |
| Intelligence Index | 7.3 | 6.7 |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | – | – |
| Context window | 131,072 tokens | 32,768 tokens |
| Weights | Open | Open |
| Developer based in | China | France |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Qwen3 8B | Mistral Small 3 |
|---|---|---|
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 126 of 161 | not measured |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 166 of 195 | 190 of 195 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | 158 of 187 | 155 of 187 |
| Sticking to the factsSummarising without inventing things, and factual answers | 7 of 153 | 11 of 153 |
Every shared result
| Benchmark | Metric | Qwen3 8B | Mistral Small 3 |
|---|---|---|---|
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 7.30 | 6.70 |
| Artificial Analysisreported | GPQA Diamond% of questions | 58.9% | 46.2% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 3.9% | 3.8% |
| Artificial Analysisreported | IFBench% of instructions | 33.5% | 26.4% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 0.0% | 0.0% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 27.8% | 19.6% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 17.0% | 8.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.36 | 0.35 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 28.0 | 33.9 |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 99.9% | 97.9% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 4.8% | 5.1% |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.
Quick answers
Is Qwen3 8B better than Mistral Small 3?
It depends on the task. Among models available today, on our benchmarks and licensed sources, Qwen3 8B ranks higher for reasoning and knowledge and sticking to the facts; Mistral Small 3 ranks higher for writing.
Which is cheaper, Qwen3 8B or Mistral Small 3?
Mistral Small 3 costs $0.058 per million tokens (three input to one output), against $0.20 for Qwen3 8B.
Run Qwen3 8B and Mistral Small 3 on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.