Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Mistral Medium 3.1 | Qwen3.5 35B A3B (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $0.4 | $0.25 |
| Output ($/M tokens) | $2 | $2 |
Verdict. Mistral Medium 3.1 and Qwen3.5 35B A3B (Reasoning) split the benchmark comparison evenly at 1–1. The tiebreaker here is price, speed, and what you actually run them on.
Pricing. Both models sit in the budget bracket for output-token pricing. At 1.0× the per-million-token cost, Qwen3.5 35B A3B (Reasoning) is meaningfully cheaper if your traffic is output-heavy (long completions, document generation, agent loops). Qwen3.5 35B A3B (Reasoning) makes more sense when output volume is low and absolute reasoning quality justifies the premium.
Strengths. Mistral Medium 3.1 is strongest on Coding Index (20.5), Intelligence Index (14.7). Qwen3.5 35B A3B (Reasoning) leads on Intelligence Index (29.9).
Speed. On throughput, Qwen3.5 35B A3B (Reasoning) generates tokens at 151 tok/s versus 106 tok/s — about 30% faster. On time-to-first-token, Mistral Medium 3.1 responds in 1470ms vs 2060ms, which matters most for chat-style UIs.
Provider. Mistral and Alibaba sell to overlapping but distinct developer audiences: Mistral tends to ship frontier reasoning models with premium positioning, while Alibaba often prices more aggressively. Your existing vendor relationships, billing, and SLA preferences may matter as much as the raw numbers above.
Workload cost. Workload scenarios (per million requests at 30M input + 15M output tokens): Mistral Medium 3.1 costs $42.00 ($504/year); Qwen3.5 35B A3B (Reasoning) costs $37.50 ($450/year). At a smaller 5M-input/2M-output scale (single-developer tool or prototype): Mistral Medium 3.1 ≈ $6.00/run, Qwen3.5 35B A3B (Reasoning) ≈ $5.25/run. At agent/realtime scale (200M input / 100M output per million requests): Mistral Medium 3.1 ≈ $280/run, Qwen3.5 35B A3B (Reasoning) ≈ $250/run. Qwen3.5 35B A3B (Reasoning) becomes more attractive at higher volume — the absolute per-token pricing difference compounds when you ship at scale.
Recommendation. Both models have legitimate use cases — the right answer depends on whether you are optimizing for benchmark ceiling, latency, or unit cost. Start with the cheaper / faster model, evaluate against your specific task, and only switch if the upgrade shows a meaningful lift.
Head-to-head deltas
Data from Artificial Analysis API — 12 benchmarks
Qwen3.5 35B A3B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.69/M tokens vs $0.80/M for Mistral Medium 3.1.
It's a tie — both models win 1 benchmarks each across 12 evaluated categories. See the detailed benchmark chart above for per-category results.
Qwen3.5 35B A3B (Reasoning) generates tokens faster at 151 tok/s vs 106 tok/s. Mistral Medium 3.1 also has lower time-to-first-token (1.47s vs 2.06s).
Choose based on your priorities: Qwen3.5 35B A3B (Reasoning) for lower cost, both perform similarly on benchmarks, and Qwen3.5 35B A3B (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.