Fireworks: Ember-1 vs Grok 4.20 Beta
fireworks/ember-1 · x-ai/grok-4.20-beta
As of November 3, 2026, Grok 4.20 Beta is the cheaper API on UberLLM: $0.1750 per million input tokens and $0.3500 per million output, versus $0.9000 / $4.50 for Fireworks: Ember-1, about 91% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose Grok 4.20 Beta to cut cost; choose Fireworks: Ember-1 when its capabilities fit your task better.
Fireworks: Ember-1 vs Grok 4.20 Beta, side by side
| Spec | Fireworks: Ember-1 | Grok 4.20 Beta |
|---|---|---|
| Price · input / 1M | $0.9000 | $0.1750 |
| Price · output / 1M | $4.50 | $0.3500 |
| Context length | 1,048,576 | 2,000,000 |
| Max output tokens | 943,718 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 70% off | 86% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 3, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Fireworks: Ember-1 vs Grok 4.20 Beta — FAQ
Is Fireworks: Ember-1 or Grok 4.20 Beta cheaper?
Grok 4.20 Beta is cheaper on a blended token mix, by about 91%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Fireworks: Ember-1 and Grok 4.20 Beta?
Fireworks: Ember-1: $0.9000 in / $4.50 out per 1M tokens. Grok 4.20 Beta: $0.1750 in / $0.3500 out per 1M tokens. That's roughly a 91% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Fireworks: Ember-1 and Grok 4.20 Beta with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.