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GPT-4o vs Muse Ember

Muse Ember leads the LLM Stats Score 45.9 to 13.4. Muse Ember is 21.9x cheaper per token.

OpenAI · Meta · Updated for 2026

Which is better?

Muse Ember leads the overall LLM Stats Score 45.9 to 13.4, ranking #47 overall.

On price, Muse Ember is roughly 21.9x 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 GPT-4o

  • you want predictable pricing at $2.50/M input and $10.00/M output

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 21.9x 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.

GPT-4o
OpenAI
Muse Ember
Meta
Core performance indexes
LLM Stats Score
13.4
#285
45.9
#47
Reasoning
15.1
#267
48.1
#24
Coding
-1.1
#289
27.3
#86
Cost, coverage & limits
Benchmark wins
—
—
Input price
$2.50 / M
$0.10 / M
Output price
$10.00 / M
$0.50 / M
Context window
128,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
GPT-4o
Muse Ember
Vision
7.9#169
23.4#78
Tool use
5.0#191
30.7#14
Multimodal
11.5#135
23.6#74
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

38 reported for GPT-4o · 6 for Muse Ember

No common benchmarks found

GPT-4o 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, GPT-4o ($2.50/1M tokens) is 25.0x more expensive than Muse Ember ($0.10/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 20.0x more expensive than Muse Ember ($0.50/1M tokens).

In conclusion, GPT-4o is more expensive than Muse Ember.*

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

Lowest available price from all providers
Thu Nov 12 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
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 GPT-4o's 128,000 tokens. Muse Ember can generate longer responses up to 524,288 tokens, while GPT-4o is limited to 16,384 tokens.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
Meta
Muse Ember
Input1,048,576 tokens
Output524,288 tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-4o and Muse Ember support multimodal inputs.

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

GPT-4o

Text
Images
Audio
Video

Muse Ember

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.

GPT-4o

Proprietary

Closed source

Muse Ember

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Muse Ember was released on 2026-11-09.

Muse Ember is 28 months newer than GPT-4o.

GPT-4o

Aug 6, 2024

2.3 years ago

Muse Ember

Nov 9, 2026

3 days ago

2.3yr 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

GPT-4o is available from Azure, OpenAI. Muse Ember is available from Meta Model API.

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

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 GPT-4o and Muse Ember side-by-side, then vote on the output you prefer.

GPT-4o
✓ Preferred
Muse Ember
Open in Playground

FAQ

Common questions about GPT-4o vs Muse Ember.

Which is better, GPT-4o or Muse Ember?

Muse Ember leads the LLM Stats Score 45.9 to 13.4. GPT-4o is made by OpenAI 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 GPT-4o compare to Muse Ember in benchmarks?

GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. 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 GPT-4o cheaper than Muse Ember?

Muse Ember is 25.0x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. Muse Ember costs $0.10/M input and $0.50/M output via meta.

What are the context window sizes for GPT-4o and Muse Ember?

GPT-4o 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 GPT-4o and Muse Ember?

Key differences include LLM Stats Score (13.4 vs 45.9), context window (128K vs 1.0M), input pricing ($2.50 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4o and Muse Ember?

GPT-4o is developed by OpenAI and Muse Ember is developed by Meta.

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