Claude Sonnet 4 vs Prism
Claude Sonnet 4 is cheaper on output tokens, while Prism offers a larger context window. Choose Claude Sonnet 4 or Prism based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 4 | Prism |
|---|---|---|
| Provider | Anthropic | Charm Hyper |
| Input / 1M tokens | $3.00 | $3.27 |
| Output / 1M tokens | $15.00 | $16.33 |
| Context window | 200K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | May 2025 | Jan 1970 |
| Aider Polyglot score | 61.3 | — |
| SWE-bench Verified score | 76.8 | — |
| GPQA Diamond score | 78.3 | — |
| FrontierMath score | 4.1 | — |
| Epoch Capabilities Index score | 142 | — |
| LMArena (Chatbot Arena) Elo score | 1351 | — |
| LMArena Vision Elo score | 1191 | — |
FAQ
Is Claude Sonnet 4 or Prism cheaper?
Claude Sonnet 4 is cheaper on output tokens ($15.00 vs $16.33 per 1M).
Which has the larger context window, Claude Sonnet 4 or Prism?
Prism 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.