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Muse Ember vs SWE-2 Flash

Muse Ember and SWE-2 Flash are closely matched at 45.9 and 43.8 on the LLM Stats Score.

Meta · Cognition · Updated for 2026

Which is better?

Muse Ember and SWE-2 Flash are closely matched on the overall LLM Stats Score at 45.9 and 43.8.

In the 1 individual benchmarks reported for both models, Muse Ember 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 Ember

  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Nov 2026

Choose SWE-2 Flash

  • you are already invested in the Cognition ecosystem

At a glance

The differences that matter most.

Muse Ember
Meta
SWE-2 Flash
Cognition
Core performance indexes
LLM Stats Score
45.9
#47
43.8
#58
Reasoning
48.1
#24
42.6
#61
Coding
27.3
#86
33.0
#44
Agents
31.6
#45
30.1
#50
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.10 / M
— / M
Output price
$0.50 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Muse Ember
SWE-2 Flash
Tool use
30.7#14
23.0#58
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

6 reported for Muse Ember · 7 for SWE-2 Flash

1 shared

Muse Ember outperforms in 1 benchmarks (Terminal-Bench 4.0), while SWE-2 Flash is better at 0 benchmarks.

Muse Ember significantly outperforms across most benchmarks.

Thu Nov 12 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 Ember specifies input context (1,048,576 tokens). Only Muse Ember specifies output context (524,288 tokens).

Meta
Muse Ember
Input1,048,576 tokens
Output524,288 tokens
Cognition
SWE-2 Flash
Input- tokens
Output- tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Muse Ember supports multimodal inputs, whereas SWE-2 Flash does not.

Muse Ember can handle both text and other forms of data like images, making it suitable for multimodal applications.

Muse Ember

Text
Images
Audio
Video

SWE-2 Flash

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 Ember

Proprietary

Closed source

SWE-2 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Muse Ember was released on 2026-11-09, while SWE-2 Flash was released on 2026-11-04.

Muse Ember is 0 month newer than SWE-2 Flash.

Muse Ember

Nov 9, 2026

3 days ago

5d newer
SWE-2 Flash

Nov 4, 2026

1 weeks 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 Muse Ember and SWE-2 Flash side-by-side, then vote on the output you prefer.

Muse Ember
✓ Preferred
SWE-2 Flash
Open in Playground

FAQ

Common questions about Muse Ember vs SWE-2 Flash.

Which is better, Muse Ember or SWE-2 Flash?

Muse Ember and SWE-2 Flash are closely matched on the LLM Stats Score at 45.9 and 43.8. Muse Ember is made by Meta and SWE-2 Flash is made by Cognition. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Muse Ember compare to SWE-2 Flash in benchmarks?

Muse Ember scores PerceptionBench: 80.6%, OSWorld 2.1 (partial): 69.5%, Agents' Last Exam: 61.6%, Personal Superintelligence Index: 46.8%, Terminal-Bench 4.0: 40.9%. SWE-2 Flash scores Terminal-Bench 2.1: 89.2%, DeepSWE 1.1: 60.1%, SWE Atlas - Codebase QnA: 50.0%, FrontierCode 1.1: 45.5%, ExploitBench: 34.8%.

What are the context window sizes for Muse Ember and SWE-2 Flash?

Muse Ember supports 1.0M tokens and SWE-2 Flash 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 Ember and SWE-2 Flash?

Key differences include LLM Stats Score (45.9 vs 43.8), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Ember and SWE-2 Flash?

Muse Ember is developed by Meta and SWE-2 Flash is developed by Cognition.

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