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Ember-1 vs Seed 2.1 Turbo

Ember-1 and Seed 2.1 Turbo are closely matched at 43.1 and 42.7 on the LLM Stats Score.

Fireworks AI · ByteDance · Updated for 2026

Which is better?

Ember-1 and Seed 2.1 Turbo are closely matched on the overall LLM Stats Score at 43.1 and 42.7.

In the 1 individual benchmarks reported for both models, Ember-1 wins 1; this is a narrower head-to-head signal than the composite indexes.

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

Choose Ember-1

  • your work emphasizes coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Sep 2026

Choose Seed 2.1 Turbo

  • you are already invested in the ByteDance ecosystem

At a glance

The differences that matter most.

Ember-1
Fireworks AI
Seed 2.1 Turbo
ByteDance
Core performance indexes
LLM Stats Score
43.1
#51
42.7
#55
Reasoning
38.6
#71
44.1
#42
Coding
37.0
#22
29.8
#58
Agents
29.7
#44
28.2
#52
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
1,040,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Ember-1
Seed 2.1 Turbo
Tool use
15.9#94
19.1#66
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

4 reported for Ember-1 · 90 for Seed 2.1 Turbo

1 shared

Ember-1 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Seed 2.1 Turbo is better at 0 benchmarks.

Ember-1 significantly outperforms across most benchmarks.

Thu Oct 08 2026 • llm-stats.com

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
ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Thu Oct 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Seed 2.1 Turbo supports multimodal inputs, whereas Ember-1 does not.

Seed 2.1 Turbo can handle both text and other forms of data like images, making it suitable for multimodal applications.

Ember-1

Text
Images
Audio
Video

Seed 2.1 Turbo

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

Seed 2.1 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Ember-1 was released on 2026-09-23, while Seed 2.1 Turbo was released on 2026-06-24.

Ember-1 is 3 months newer than Seed 2.1 Turbo.

Ember-1

Sep 23, 2026

2 weeks ago

3mo newer
Seed 2.1 Turbo

Jun 24, 2026

3 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Ember-1 and Seed 2.1 Turbo side-by-side, then vote on the output you prefer.

Ember-1
✓ Preferred
Seed 2.1 Turbo
Open in Playground

FAQ

Common questions about Ember-1 vs Seed 2.1 Turbo.

Which is better, Ember-1 or Seed 2.1 Turbo?

Ember-1 and Seed 2.1 Turbo are closely matched on the LLM Stats Score at 43.1 and 42.7. Ember-1 is made by Fireworks AI and Seed 2.1 Turbo is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Ember-1 compare to Seed 2.1 Turbo 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%. Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%.

What are the context window sizes for Ember-1 and Seed 2.1 Turbo?

Ember-1 supports 1.0M tokens and Seed 2.1 Turbo 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 Seed 2.1 Turbo?

Key differences include LLM Stats Score (43.1 vs 42.7), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Ember-1 and Seed 2.1 Turbo?

Ember-1 is developed by Fireworks AI and Seed 2.1 Turbo is developed by ByteDance.

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