Ember-1 vs o3
Ember-1 leads the LLM Stats Score 43.6 to 31.0. o3 is 1.7x cheaper per token.
Fireworks AI · OpenAI · Updated for 2026
Which is better?
Ember-1 leads the overall LLM Stats Score 43.6 to 31.0, ranking #46 overall.
In the 2 individual benchmarks reported for both models, Ember-1 wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, o3 is roughly 1.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Ember-1 also accepts a larger context window (1,040,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Ember-1
- overall performance matters — it scores 43.6 and ranks #46 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you process long inputs — it offers a 1,040,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose o3
- cost matters — it's about 1.7x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
4 reported for Ember-1 · 22 for o3
Ember-1 outperforms in 2 benchmarks (SWE-Bench Verified, Tau2 Airline), while o3 is better at 0 benchmarks.
Ember-1 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Ember-1 ($3.00/1M tokens) is 1.5x more expensive than o3 ($2.00/1M tokens).
For output processing, Ember-1 ($15.00/1M tokens) is 1.9x more expensive than o3 ($8.00/1M tokens).
In conclusion, Ember-1 is more expensive than o3.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Ember-1 accepts 1,040,000 input tokens compared to o3's 200,000 tokens. Only o3 specifies output context (100,000 tokens).
Input capabilities
Documented input modalities across available providers
o3 supports multimodal inputs, whereas Ember-1 does not.
o3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Ember-1
o3
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Ember-1 was released on 2026-09-23, while o3 was released on 2025-04-16.
Ember-1 is 18 months newer than o3.
Sep 23, 2026
2 weeks ago
1.4yr newerApr 16, 2025
1.5 years ago
Knowledge Cutoff
When training data ends
o3 has a documented knowledge cutoff of 2024-05-31, while Ember-1's cutoff date is not specified.
We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without Ember-1's cutoff date.
—
May 2024
Provider Availability
Ember-1 is available from Fireworks. o3 is available from OpenAI.
Ember-1
o3
Outputs Comparison
Judge for yourself.
Run your own prompts against Ember-1 and o3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Ember-1 vs o3.