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Muse Spark 1.3 vs Seed 2.1 Turbo

Muse Spark 1.3 leads the LLM Stats Score 54.3 to 43.2.

Meta · ByteDance · Updated for 2026

Which is better?

Muse Spark 1.3 leads the overall LLM Stats Score 54.3 to 43.2, ranking #6 overall.

In the 1 individual benchmarks reported for both models, Muse Spark 1.3 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 Muse Spark 1.3

  • overall performance matters — it scores 54.3 and ranks #6 on LLM Stats
  • your work emphasizes reasoning and 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.

Muse Spark 1.3
Meta
Seed 2.1 Turbo
ByteDance
Core performance indexes
LLM Stats Score
54.3
#6
43.2
#42
Reasoning
51.8
#7
44.5
#34
Coding
41.8
#10
31.0
#45
Agents
40.1
#6
29.1
#39
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$1.25 / M
— / M
Output price
$4.25 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Muse Spark 1.3
Seed 2.1 Turbo
Tool use
33.7#4
21.4#51
Long context
31.9#1
29.8#6
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

11 reported for Muse Spark 1.3 · 90 for Seed 2.1 Turbo

1 shared

Muse Spark 1.3 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Seed 2.1 Turbo is better at 0 benchmarks.

Muse Spark 1.3 significantly outperforms across most benchmarks.

Sun Sep 20 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Muse Spark 1.3 specifies input context (1,048,576 tokens). Only Muse Spark 1.3 specifies output context (943,718 tokens).

Meta
Muse Spark 1.3
Input1,048,576 tokens
Output943,718 tokens
ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Muse Spark 1.3 and Seed 2.1 Turbo support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Muse Spark 1.3

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.

Muse Spark 1.3

Proprietary

Closed source

Seed 2.1 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Muse Spark 1.3 was released on 2026-09-02, while Seed 2.1 Turbo was released on 2026-06-24.

Muse Spark 1.3 is 2 months newer than Seed 2.1 Turbo.

Muse Spark 1.3

Sep 2, 2026

2 weeks ago

2mo newer
Seed 2.1 Turbo

Jun 24, 2026

2 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?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Muse Spark 1.3 and Seed 2.1 Turbo side-by-side, then vote on the output you prefer.

Muse Spark 1.3
✓ Preferred
Seed 2.1 Turbo
Open in Playground

FAQ

Common questions about Muse Spark 1.3 vs Seed 2.1 Turbo.

Which is better, Muse Spark 1.3 or Seed 2.1 Turbo?

Muse Spark 1.3 leads the LLM Stats Score 54.3 to 43.2. Muse Spark 1.3 is made by Meta 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 Muse Spark 1.3 compare to Seed 2.1 Turbo in benchmarks?

Muse Spark 1.3 scores MRCR v2 (8-needle): 98.5%, MRCR v2 (8-needle, 512K-1M): 98.1%, DeepSearchQA: 89.4%, Terminal-Bench 2.1: 88.8%, DeepSWE 1.1: 75.4%. 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 Muse Spark 1.3 and Seed 2.1 Turbo?

Muse Spark 1.3 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 Muse Spark 1.3 and Seed 2.1 Turbo?

Key differences include LLM Stats Score (54.3 vs 43.2). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Spark 1.3 and Seed 2.1 Turbo?

Muse Spark 1.3 is developed by Meta and Seed 2.1 Turbo is developed by ByteDance.

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