Compare, 2 models
Side by side.
Claude Sonnet 5 and GPT-5.2 on every board at least two of them share. Blue marks the best in each row.
Specs
List prices, context and published output speed. Blue marks the best in each row.
| Spec | Claude Sonnet 5Anthropic | GPT-5.2OpenAI |
|---|---|---|
| Lab | Anthropic | OpenAI |
| Type | Language | Language |
| Released | Jun 30, 2026 | Dec 11, 2025 |
| Input price$ per 1M tokens | $2.00 | $1.75 |
| Output price$ per 1M tokens | $10.00 | $14.00 |
| Blended price3 input tokens per output | $4.00 | $4.81 |
| Contexttokens | 1M | 400K |
| Open weights | No | No |
Benchmarks
Every board where at least two of these models have a published score. Each score links to its source.
| Board | Claude Sonnet 5Anthropic | GPT-5.2OpenAI |
|---|---|---|
| Epoch Capabilities IndexOverall, higher is better | 157 | 154 |
| LMArena textOverall, higher is better | 1461High, style control | 1437High, style control |
| FrontierMath Tiers 1-3Reasoning and knowledge, higher is better | 65.6%max setting | 67.4%xhigh setting |
| GPQA DiamondReasoning and knowledge, higher is better | 90.5%xhigh setting | 91.4%xhigh setting |
n/a means the board has not published a score for that model.