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LongCat-Flash-Chat vs Muse Ember

Muse Ember leads the LLM Stats Score 45.9 to 19.1. Muse Ember is 2.6x cheaper per token.

Meituan · Meta · Updated for 2026

Which is better?

Muse Ember leads the overall LLM Stats Score 45.9 to 19.1, ranking #47 overall.

On price, Muse Ember is roughly 2.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Muse Ember also accepts a larger context window (1,048,576 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 LongCat-Flash-Chat

  • you need open weights you can self-host or fine-tune

Choose Muse Ember

  • overall performance matters — it scores 45.9 and ranks #47 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 2.6x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Nov 2026

At a glance

The differences that matter most.

LongCat-Flash-Chat
Meituan
Muse Ember
Meta
Core performance indexes
LLM Stats Score
19.1
#245
45.9
#47
Reasoning
19.1
#239
48.1
#24
Coding
12.2
#184
27.3
#86
Agents
8.3
#166
31.6
#45
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.30 / M
$0.10 / M
Output price
$1.20 / M
$0.50 / M
Context window
128,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
LongCat-Flash-Chat
Muse Ember
Tool use
7.8#176
30.7#14
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for LongCat-Flash-Chat · 6 for Muse Ember

No common benchmarks found

LongCat-Flash-Chat and Muse Emberdon'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

Pricing Analysis

Price comparison per million tokens

Muse Ember costs less

For input processing, LongCat-Flash-Chat ($0.30/1M tokens) is 3.0x more expensive than Muse Ember ($0.10/1M tokens).

For output processing, LongCat-Flash-Chat ($1.20/1M tokens) is 2.4x more expensive than Muse Ember ($0.50/1M tokens).

In conclusion, LongCat-Flash-Chat is more expensive than Muse Ember.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Nov 13 2026 • llm-stats.com
Meituan
LongCat-Flash-Chat
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
Meta
Muse Ember
Input tokens$0.10
Output tokens$0.50
Best providerMeta
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Muse Ember accepts 1,048,576 input tokens compared to LongCat-Flash-Chat's 128,000 tokens. Muse Ember can generate longer responses up to 524,288 tokens, while LongCat-Flash-Chat is limited to 128,000 tokens.

Meituan
LongCat-Flash-Chat
Input128,000 tokens
Output128,000 tokens
Meta
Muse Ember
Input1,048,576 tokens
Output524,288 tokens
Fri Nov 13 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Muse Ember supports multimodal inputs, whereas LongCat-Flash-Chat does not.

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

LongCat-Flash-Chat

Text
Images
Audio
Video

Muse Ember

Text
Images
Audio
Video

License

Usage and distribution terms

LongCat-Flash-Chat is licensed under MIT, while Muse Ember uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

LongCat-Flash-Chat

MIT

Open weights

Muse Ember

Proprietary

Closed source

Release Timeline

When each model was launched

LongCat-Flash-Chat was released on 2025-08-29, while Muse Ember was released on 2026-11-09.

Muse Ember is 15 months newer than LongCat-Flash-Chat.

LongCat-Flash-Chat

Aug 29, 2025

1.2 years ago

Muse Ember

Nov 9, 2026

3 days ago

1.2yr newer

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

Provider Availability

LongCat-Flash-Chat is available from Meituan. Muse Ember is available from Meta Model API.

LongCat-Flash-Chat

meituan logo
Meituan
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M

Muse Ember

meta logo
Meta
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against LongCat-Flash-Chat and Muse Ember side-by-side, then vote on the output you prefer.

LongCat-Flash-Chat
✓ Preferred
Muse Ember
Open in Playground

FAQ

Common questions about LongCat-Flash-Chat vs Muse Ember.

Which is better, LongCat-Flash-Chat or Muse Ember?

Muse Ember leads the LLM Stats Score 45.9 to 19.1. LongCat-Flash-Chat is made by Meituan and Muse Ember is made by Meta. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does LongCat-Flash-Chat compare to Muse Ember in benchmarks?

LongCat-Flash-Chat scores MATH-500: 96.4%, MMLU: 89.7%, IFEval: 89.6%, ZebraLogic: 89.3%, HumanEval: 88.4%. 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%.

Is LongCat-Flash-Chat cheaper than Muse Ember?

Muse Ember is 3.0x cheaper for input tokens. LongCat-Flash-Chat costs $0.30/M input and $1.20/M output via meituan. Muse Ember costs $0.10/M input and $0.50/M output via meta.

What are the context window sizes for LongCat-Flash-Chat and Muse Ember?

LongCat-Flash-Chat supports 128K tokens and Muse Ember supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between LongCat-Flash-Chat and Muse Ember?

Key differences include LLM Stats Score (19.1 vs 45.9), context window (128K vs 1.0M), input pricing ($0.30 vs $0.10/M), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes LongCat-Flash-Chat and Muse Ember?

LongCat-Flash-Chat is developed by Meituan and Muse Ember is developed by Meta.

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