Compare / head-to-head
GPT-5.6 TerravsQwen3.5-Flash
GPT-5.6 Terra leads 4 of 4 shared benchmarks. Qwen3.5-Flash is 44.3x cheaper per token. GPT-5.6 Terra has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
4 – 0
GPT-5.6 Terra leads
Cheaper per token
Qwen3.5-Flash
44.3x cheaper, input + output
Larger context
GPT-5.6 Terra
1.1M tokens
Provider uptime (30d)
94.2446% · —
OpenAI · Qwen
GPT-5.6 Terra
OpenAI · released 2026-07-09
textvision
Qwen3.5-Flash
Qwen · released 2026-02-23
textvision
Quality
Benchmark matrix
4 shared · 3 only GPT-5.6 Terra · 1 only Qwen3.5-Flash| Benchmark | GPT-5.6 Terra | Qwen3.5-Flash | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| GPQA Diamond | 92.9% ↗ | 82.3% ↗epoch | +10.6 pt | GPT-5.6 Terra |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 86% ↗epoch | 9.5% ↗epoch | +76.5 pt | GPT-5.6 Terra |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 99.7% ↗epoch | 84.4% ↗epoch | +15.3 pt | GPT-5.6 Terra |
| SimpleQA Verified | 43.2% ↗epoch | 20.3% ↗epoch | +22.9 pt | GPT-5.6 Terra |
| Only GPT-5.6 Terra reports · 3 | ||||
| DeepSWE v1.1 | 69.6% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 70.7% ↗epoch | not reported | — | — |
| SWE-Bench Pro | 63.4% ↗ | not reported | — | — |
| Only Qwen3.5-Flash reports · 1 | ||||
| LMArena Elo | not reported | 1397.7 ↗ | — | — |
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 GPT-5.6 Terra minus Qwen3.5-Flash 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 | GPT-5.6 Terra | Qwen3.5-Flash | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 1M tokens | GPT-5.6 Terra |
| Max output | 128K tokens | — | — |
| Input price / 1M | $2 ↗ | $0.029 ↗ | Qwen3.5-Flash |
| Output price / 1M | $12 ↗ | $0.287 ↗ | Qwen3.5-Flash |
| Cached input / 1M | $0.2 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $14 | $0.316 | Qwen3.5-Flash |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-07-09 | 2026-02-23 | — |
| Cited benchmark scores | 8 | 5 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GPT-5.6 Terra vs …
Models sharing the most benchmarksMore matchups
Qwen3.5-Flash vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GPT-5.6 Terra and Qwen3.5-Flash on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.