Claude Sonnet 5 vs Gemini 2.5 Pro
Both have similar output pricing, while Gemini 2.5 Pro offers a larger context window. Choose Claude Sonnet 5 or Gemini 2.5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 5 | Gemini 2.5 Pro |
|---|---|---|
| Provider | Anthropic | |
| Input / 1M tokens | $2.00 | $1.25 |
| Output / 1M tokens | $10.00 | $10.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Jun 2025 |
| LMArena (Chatbot Arena) Elo score | 1442 | 1458 |
| LMArena WebDev Elo score | 1540 | 1226 |
| LMArena Vision Elo score | 1274 | 1263 |
| GPQA Diamond score | 90.5 | — |
| Epoch Capabilities Index score | 156 | — |
FAQ
Is Claude Sonnet 5 or Gemini 2.5 Pro cheaper?
Claude Sonnet 5 and Gemini 2.5 Pro have comparable output pricing.
Which has the larger context window, Claude Sonnet 5 or Gemini 2.5 Pro?
Gemini 2.5 Pro has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.