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Ember-1 vs o1-pro

Ember-1 leads the LLM Stats Score 43.1 to 19.7.

Fireworks AI · OpenAI · Updated for 2026

Which is better?

Ember-1 leads the overall LLM Stats Score 43.1 to 19.7, ranking #51 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Ember-1

  • overall performance matters — it scores 43.1 and ranks #51 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

Choose o1-pro

  • you are already invested in the OpenAI ecosystem

At a glance

The differences that matter most.

Ember-1
Fireworks AI
o1-pro
OpenAI
Core performance indexes
LLM Stats Score
43.1
#51
19.7
#215
Reasoning
38.6
#71
20.0
#206
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
1,040,000
—

Individual benchmarks

4 reported for Ember-1 · 2 for o1-pro

No common benchmarks found

Ember-1 and o1-prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Ember-1 specifies input context (1,040,000 tokens).

Fireworks AI
Ember-1
Input1,040,000 tokens
Output- tokens
OpenAI
o1-pro
Input- tokens
Output- tokens
Fri Oct 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

o1-pro supports multimodal inputs, whereas Ember-1 does not.

o1-pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Ember-1

Text
Images
Audio
Video

o1-pro

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Ember-1

Proprietary

Closed source

o1-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Ember-1 was released on 2026-09-23, while o1-pro was released on 2024-12-17.

Ember-1 is 22 months newer than o1-pro.

Ember-1

Sep 23, 2026

2 weeks ago

1.8yr newer
o1-pro

Dec 17, 2024

1.8 years ago

Knowledge Cutoff

When training data ends

o1-pro has a documented knowledge cutoff of 2023-09-30, while Ember-1's cutoff date is not specified.

We can confirm o1-pro's training data extends to 2023-09-30, but cannot make a direct comparison without Ember-1's cutoff date.

Ember-1

—

o1-pro

Sep 2023

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Ember-1 and o1-pro side-by-side, then vote on the output you prefer.

Ember-1
✓ Preferred
o1-pro
Open in Playground

FAQ

Common questions about Ember-1 vs o1-pro.

Which is better, Ember-1 or o1-pro?

Ember-1 leads the LLM Stats Score 43.1 to 19.7. Ember-1 is made by Fireworks AI and o1-pro is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Ember-1 compare to o1-pro in benchmarks?

Ember-1 scores SWE-Bench Verified: 92.2%, Terminal-Bench 2.1: 82.0%, DeepSWE 1.1: 75.2%, Tau2 Airline: 66.0%. o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%.

What are the context window sizes for Ember-1 and o1-pro?

Ember-1 supports 1.0M tokens and o1-pro supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Ember-1 and o1-pro?

Key differences include LLM Stats Score (43.1 vs 19.7), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Ember-1 and o1-pro?

Ember-1 is developed by Fireworks AI and o1-pro is developed by OpenAI.

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