Compare / head-to-head
o3vsQwen3.5-Plus
Qwen3.5-Plus leads 2 of 3 shared benchmarks. Qwen3.5-Plus is 12.5x cheaper per token. Qwen3.5-Plus has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 2
Qwen3.5-Plus leads
Cheaper per token
Qwen3.5-Plus
12.5x cheaper, input + output
Larger context
Qwen3.5-Plus
1M tokens
Provider uptime (30d)
95.1368% · —
OpenAI · Qwen
o3
OpenAI · released 2025-04-16
textvision
Qwen3.5-Plus
Qwen · released 2026-02-15
textvision
Quality
Benchmark matrix
3 shared · 4 only o3 · 0 only Qwen3.5-Plus| Benchmark | o3 | Qwen3.5-Plus | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| GPQA Diamond | 81.8% ↗epoch | 84.8% ↗epoch | -3 pt | Qwen3.5-Plus |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 84.4% ↗epoch | 86.7% ↗epoch | -2.3 pt | Qwen3.5-Plus |
| SimpleQA Verified | 49.4% ↗epoch | 25.4% ↗epoch | +24 pt | o3 |
| Only o3 reports · 4 | ||||
| SWE-bench Verified | 69.1% ↗ | not reported | — | — |
| AIME 2025 | 89.2% ↗matharena ⚠ | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 33.3% ↗epoch | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 62.3% ↗epoch | not reported | — | — |
| Only Qwen3.5-Plus reports · 0 | ||||
| Qwen3.5-Plus reports nothing o3 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 o3 minus Qwen3.5-Plus 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 | o3 | Qwen3.5-Plus | Edge |
|---|---|---|---|
| Context window | 200K tokens | 1M tokens | Qwen3.5-Plus |
| Max output | 100K tokens | — | — |
| Input price / 1M | $2 ↗ | $0.115 ↗ | Qwen3.5-Plus |
| Output price / 1M | $8 ↗ | $0.688 ↗ | Qwen3.5-Plus |
| Cached input / 1M | $0.5 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $10 | $0.803 | Qwen3.5-Plus |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-04-16 | 2026-02-15 | — |
| Cited benchmark scores | 7 | 3 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
o3 vs …
Models sharing the most benchmarksMore matchups
Qwen3.5-Plus vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run o3 and Qwen3.5-Plus on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.