# GPT-5.4 nano vs Muse Ember

> Side-by-side benchmark comparison for GPT-5.4 nano and Muse Ember across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-nano-vs-muse-ember
- Last updated: November 9, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-5.4 nano and Muse Ember.

## Summary

- GPT-5.4 nano and Muse Ember do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT-5.4 nano | Muse Ember |
|----------|----------|----------|
| Creator | OpenAI | Meta |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 1M |
| Independent public score (not head-to-head) | 46.47 | 56.24 |
| Benchmarks Covered | 23 | 4 |
| Pricing (input/output) | $0.20 / $1.25 | $0.10 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 33.4 (Supported · #96/132)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 46.3% | Coming soon | Coming soon |
| OSWorld-Verified | 39% | Coming soon | Coming soon |
| MCP Atlas | 56.1% | Coming soon | Coming soon |
| Toolathlon | 35.5% | Coming soon | Coming soon |
| τ²-bench results | 92.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 41.6% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 40.90% | Coming soon |
| OSWorld 2.1 | Coming soon | 69.5% | Coming soon |
| Agents' Last Exam (Linux) | Coming soon | 61.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 30.3 (Supported · #108/158)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 46.3% | Coming soon | Coming soon |
| Vibe Code Bench | 26.10% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 69.8% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 37.7 (Supported · #94/157)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 51.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 5.7% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 38.8 (Supported · #63/67)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 74.90% | Coming soon | Coming soon |
| ParseBench | 42.24% | Coming soon | Coming soon |
| MMMU-Pro | 66.1% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 69.5% | Coming soon | Coming soon |
| PerceptionBench (tools) | Coming soon | 80.6% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 38.9 (Supported · #121/179)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 82.8% | Coming soon | Coming soon |
| HLE | 37.7% | Coming soon | Coming soon |
| HLE w/o tools | 24.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 77.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 77.2% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 93.3 (#12/157)
- Muse Ember public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 48.8 (Unranked · 2 rankable rows)
- Muse Ember public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Muse Ember | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 44.912% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.195% | Coming soon | Coming soon |

## FAQ

### Can I compare GPT-5.4 nano and Muse Ember on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [GPT-5.4 nano vs GPT-5.4 Pro](/compare/gpt-5-4-nano-vs-gpt-5-4-pro)
- [Muse Ember vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-muse-ember)
- [GPT-5.4 nano vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-nano)
- [Muse Ember vs GPT-5.4](/compare/gpt-5-4-vs-muse-ember)

## Explore More

- [GPT-5.4 nano profile](/models/gpt-5-4-nano)
- [Muse Ember profile](/models/muse-ember)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)