Compare / head-to-head
Claude 3.5 SonnetvsGPT-5.2
GPT-5.2 leads 4 of 4 shared benchmarks. GPT-5.2 is 1.1x cheaper per token. GPT-5.2 has the larger context window (400K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 4
GPT-5.2 leads
Cheaper per token
GPT-5.2
1.1x cheaper, input + output
Larger context
GPT-5.2
400K tokens
Provider uptime (30d)
100% · 94.2446%
Anthropic · OpenAI
Claude 3.5 Sonnet
Anthropic · released 2024-10-22
textvision
Quality
Benchmark matrix
4 shared · 0 only Claude 3.5 Sonnet · 10 only GPT-5.2| Benchmark | Claude 3.5 Sonnet | GPT-5.2 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| SWE-bench Verified | 49% ↗ | 80% ↗ | -31 pt | GPT-5.2 |
| GPQA Diamond | 55.3% ↗epoch | 92.4% ↗ | -37.1 pt | GPT-5.2 |
| AIME 2025 | 3.3% ↗matharena | 100% ↗ | -96.7 pt | GPT-5.2 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 8.5% ↗epoch | 96.1% ↗epoch | -87.6 pt | GPT-5.2 |
| Only Claude 3.5 Sonnet reports · 0 | ||||
| Claude 3.5 Sonnet reports nothing GPT-5.2 does not. | ||||
| Only GPT-5.2 reports · 10 | ||||
| AIME 2026 | not reported | 98.3% ↗matharena | — | — |
| LMArena Elo | not reported | 1412.4 ↗ | — | — |
| ARC-AGI-1 (Verified) | not reported | 86.2% ↗ | — | — |
| ARC-AGI-2 (Verified) | not reported | 52.9% ↗ | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 31.7% ↗epoch | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 67.4% ↗epoch | — | — |
| GDPval (wins or ties) | not reported | 70.9% ↗ | — | — |
| SimpleQA Verified | not reported | 37.1% ↗epoch | — | — |
| SWE-Bench Pro | not reported | 55.6% ↗ | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 73.8% ↗epoch | — | — |
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 3.5 Sonnet minus GPT-5.2 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 3.5 Sonnet | GPT-5.2 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 400K tokens | GPT-5.2 |
| Max output | 8K tokens | 128K tokens | GPT-5.2 |
| Input price / 1M | $3 ↗ | $1.75 ↗ | GPT-5.2 |
| Output price / 1M | $15 ↗ | $14 ↗ | GPT-5.2 |
| Cached input / 1M | $0.3 ↗ | $0.175 ↗ | GPT-5.2 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $18 | $15.75 | GPT-5.2 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2024-10-22 | 2025-12-11 | — |
| Cited benchmark scores | 4 | 16 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude 3.5 Sonnet vs …
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GPT-5.2 vs …
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Which one wins on your data?
Public benchmarks are a starting point. Run Claude 3.5 Sonnet and GPT-5.2 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.