Anthropic Claude Sonnet 4.5 vs Fireworks Ember-1
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- Both accept prompts up to 1M tokens.
- Ember-1 is the newer model (released 2026-09-24).
| Claude Sonnet 4.5 | Ember-1 | |
|---|---|---|
| Vendor | Anthropic | Fireworks |
| Released | 2025-09-29 | 2026-09-24 |
| Input / 1M | $3.00 | $3.00 |
| Output / 1M | $15.00 | $15.00 |
| Cached input / 1M | $0.30 | $0.30 |
| Blended / 1M (3:1) | $6.00 | $6.00 |
| Context | 1M | 1M |
| Max output | 64K | 944K |
| Accepts | text, image, file | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 7 | 1 |
| Cheapest provider, output | $15.00 | $15.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | — |
Cost calculator
Claude Sonnet 4.5
$405 per month$13.50 per day
Ember-1
$405 per month$13.50 per day
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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