Claude Sonnet 4 vs Ember-1 (Fireworks AI)
Both have similar output pricing, while Ember-1 (Fireworks AI) offers a larger context window. Choose Claude Sonnet 4 or Ember-1 (Fireworks AI) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 4 | Ember-1 (Fireworks AI) |
|---|---|---|
| Provider | Anthropic | Eden AI |
| Input / 1M tokens | $3.00 | $3.00 |
| Output / 1M tokens | $15.00 | $15.00 |
| Context window | 200K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | May 2025 | Sep 2026 |
| Aider Polyglot score | 61.3 | — |
| SWE-bench Verified score | 76.8 | — |
| FrontierMath score | 4.1 | — |
| Epoch Capabilities Index score | 142 | — |
| GPQA Diamond score | 78.3 | — |
| LMArena (Chatbot Arena) Elo score | 1351 | — |
| LMArena Vision Elo score | 1191 | — |
FAQ
Is Claude Sonnet 4 or Ember-1 (Fireworks AI) cheaper?
Claude Sonnet 4 and Ember-1 (Fireworks AI) have comparable output pricing.
Which has the larger context window, Claude Sonnet 4 or Ember-1 (Fireworks AI)?
Ember-1 (Fireworks AI) 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.