Claude Sonnet 4.5 vs Ember-1 (Fireworks AI)
Both have similar output pricing, while Ember-1 (Fireworks AI) offers a larger context window. Choose Claude Sonnet 4.5 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 4.5 | Ember-1 (Fireworks AI) |
|---|---|---|
| Provider | Anthropic | Eden AI |
| Input / 1M tokens | $3.00 | $3.00 |
| Output / 1M tokens | $15.00 | $15.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2025 | Sep 2026 |
| LiveBench score | 67.9 | — |
| SWE-bench Multilingual score | 67.0 | — |
| SWE-bench Verified score | 74.8 | — |
| FrontierMath score | 15.2 | — |
| Epoch Capabilities Index score | 147 | — |
| GPQA Diamond score | 82.3 | — |
| LMArena (Chatbot Arena) Elo score | 1438 | — |
| LMArena WebDev Elo score | 1394 | — |
FAQ
Is Claude Sonnet 4.5 or Ember-1 (Fireworks AI) cheaper?
Claude Sonnet 4.5 and Ember-1 (Fireworks AI) have comparable output pricing.
Which has the larger context window, Claude Sonnet 4.5 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.