Compare / head-to-head
Claude Sonnet 4vsQwen3.5 27B
Qwen3.5 27B leads 2 of 2 shared benchmarks. Qwen3.5 27B is 23.3x cheaper per token. Qwen3.5 27B has the larger context window (262K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 2
Qwen3.5 27B leads
Cheaper per token
Qwen3.5 27B
23.3x cheaper, input + output
Larger context
Qwen3.5 27B
262K tokens
Provider uptime (30d)
100% · —
Anthropic · Qwen
Claude Sonnet 4
Anthropic · released 2025-05-22
textvision
Qwen3.5 27B
Qwen
textvision
Quality
Benchmark matrix
2 shared · 2 only Claude Sonnet 4 · 3 only Qwen3.5 27B| Benchmark | Claude Sonnet 4 | Qwen3.5 27B | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| SWE-bench Verified | 72.7% ↗ | 75% ↗ | -2.3 pt | Qwen3.5 27B |
| GPQA Diamond | 79.2% ↗epoch | 85.5% ↗ | -6.3 pt | Qwen3.5 27B |
| Only Claude Sonnet 4 reports · 2 | ||||
| AIME 2024 (no extended thinking) | 33.1% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 71.1% ↗epoch | not reported | — | — |
| Only Qwen3.5 27B reports · 3 | ||||
| MMLU-Pro | not reported | 86.1% ↗ | — | — |
| AIME 2026 | not reported | 91.7% ↗matharena ⚠ | — | — |
| LMArena Elo | not reported | 1408.1 ↗ | — | — |
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 minus Qwen3.5 27B 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
Official pricing pages and model cards| Spec | Claude Sonnet 4 | Qwen3.5 27B | Edge |
|---|---|---|---|
| Context window | 200K tokens | 262K tokens | Qwen3.5 27B |
| Max output | 64K tokens | — | — |
| Input price / 1M | $3 ↗ | $0.086 ↗ | Qwen3.5 27B |
| Output price / 1M | $15 ↗ | $0.688 ↗ | Qwen3.5 27B |
| Cached input / 1M | $0.3 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $18 | $0.774 | Qwen3.5 27B |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-05-22 | — | — |
| Cited benchmark scores | 4 | 5 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Sonnet 4 vs …
Models sharing the most benchmarksMore matchups
Qwen3.5 27B vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Claude Sonnet 4 and Qwen3.5 27B on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.