Compare / head-to-head
GPT-5.4vs
Muse Spark 1.1
Muse Spark 1.1 leads 12 of 21 shared benchmarks. Muse Spark 1.1 is 3.2x cheaper per token. GPT-5.4 has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
9 – 12
Muse Spark 1.1 leads
Cheaper per token
Muse Spark 1.1
3.2x cheaper, input + output
Larger context
GPT-5.4
1.1M tokens
Providers
2 providers
OpenAI · Meta
GPT-5.4
OpenAI · released 2026-03-05
textvision
Muse Spark 1.1
Meta · released 2026-07-09
textvisionvideoaudio
Quality
Benchmark matrix
21 shared · 21 only GPT-5.4 · 9 only Muse Spark 1.1| Benchmark | GPT-5.4 | Muse Spark 1.1 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 21 | ||||
| LMArena Elo | 1452.6 ↗ | 1491.3 ↗ | -38.7 | Muse Spark 1.1 |
| APEX-Agents (Mercor) | 52.4% ↗ | 31.8% ↗ | +20.6 pt | GPT-5.4 |
| DeepSWE v1.1 (Datacurve) | 51.8% ↗ | 53.3% ↗ | -1.5 pt | Muse Spark 1.1 |
| Humanity's Last Exam (with tools) | 52.1% ↗ | 62.1% ↗ | -10 pt | Muse Spark 1.1 |
| LiveBench Agentic Coding (LiveBench) | 53.8% ↗ | 58.5% ↗ | -4.7 pt | Muse Spark 1.1 |
| LiveBench Coding (LiveBench) | 77.5% ↗ | 77.2% ↗ | +0.3 pt | GPT-5.4 |
| LiveBench Data Analysis (LiveBench) | 79.3% ↗ | 72.5% ↗ | +6.8 pt | GPT-5.4 |
| LiveBench Instruction Following (LiveBench) | 70.2% ↗ | 69.6% ↗ | +0.6 pt | GPT-5.4 |
| LiveBench Language (LiveBench) | 82.6% ↗ | 74.3% ↗ | +8.3 pt | GPT-5.4 |
| LiveBench Mathematics (LiveBench) | 94.1% ↗ | 87.1% ↗ | +7 pt | GPT-5.4 |
| LiveBench Reasoning (LiveBench) | 88.1% ↗ | 87.7% ↗ | +0.4 pt | GPT-5.4 |
| LMArena Agent (LMArena) | 0.0105 ↗ | -0.0488 ↗ | +0.1 | GPT-5.4 |
| LMArena Vision (LMArena) | 1283.8 ↗ | 1281.1 ↗ | +2.7 | GPT-5.4 |
| LMArena WebDev (LMArena) | 1395.1 ↗ | 1541.7 ↗ | -146.6 | Muse Spark 1.1 |
| MCP Atlas | 67.2% ↗ | 88.1% ↗ | -20.9 pt | Muse Spark 1.1 |
| OSWorld-Verified | 75% ↗ | 80.8% ↗ | -5.8 pt | Muse Spark 1.1 |
| SAGE (Vals AI) | 43.3% ↗ | 45.6% ↗ | -2.3 pt | Muse Spark 1.1 |
| SimpleQA Verified | 45.1% ↗epoch run | 57.8% ↗epoch run | -12.7 pt | Muse Spark 1.1 |
| SWE-Bench Pro | 57.7% ↗ | 61.5% ↗ | -3.8 pt | Muse Spark 1.1 |
| tau2-bench Banking Knowledge (Sierra) | 39.4% ↗ | 40.5% ↗ | -1.1 pt | Muse Spark 1.1 |
| Vending-Bench 2 (Andon Labs) | 6144.18 ↗ | 6520.48 ↗ | -376.3 | Muse Spark 1.1 |
| Only GPT-5.4 reports · 21 | ||||
| GPQA Diamond | 92.8% ↗ | not reported | — | — |
| AIME 2026 | 99.2% ↗matharena ⚠ | not reported | — | — |
| Humanity's Last Exam (no tools) | 39.8% ↗ | not reported | — | — |
| BrowseComp | 82.7% ↗ | not reported | — | — |
| Chess Puzzles (Epoch AI run) | 44% ↗epoch run | not reported | — | — |
| EBR-bench (Epoch AI run) | 25.4% ↗epoch run | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 49% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 78.6% ↗epoch run | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 37.5% ↗epoch run | not reported | — | — |
| GDPval (wins or ties) | 83% ↗ | not reported | — | — |
| GSO Opt@1 (GSO) | 30.4% ↗ | not reported | — | — |
| MirrorCode (Epoch AI run) | 15.6% ↗epoch run | not reported | — | — |
| MMMU-Pro (no tools) | 81.2% ↗ | not reported | — | — |
| MMMU-Pro (with tools) | 82.1% ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 37% ↗epoch run | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 97.8% ↗epoch run | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 76.9% ↗epoch run | not reported | — | — |
| Tau2-bench Telecom | 98.9% ↗ | not reported | — | — |
| Terminal-Bench 2.0 | 75.1% ↗ | not reported | — | — |
| Toolathlon | 54.6% ↗ | not reported | — | — |
| WeirdML (Håvard Tveit Ihle) | 77.7% ↗ | not reported | — | — |
| Only Muse Spark 1.1 reports · 9 | ||||
| BabyVision | not reported | 76.3% ↗ | — | — |
| CharXiv Reasoning | not reported | 88.4% ↗ | — | — |
| DeepSWE v1.1 | not reported | 53.3% ↗ | — | — |
| Finance Agent v2 | not reported | 57.2% ↗ | — | — |
| JobBench | not reported | 54.7% ↗ | — | — |
| OSWorld-Verified (XLANG) | not reported | 80.7% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 80% ↗ | — | — |
| Toolathlon-Verified | not reported | 75.6% ↗ | — | — |
| Toolathlon-Verified (HKUST) | not reported | 75.6% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-5.4 minus Muse Spark 1.1 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-5.4 | Muse Spark 1.1 | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 1.0M tokens | GPT-5.4 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $2.5 ↗ | $1.25 ↗ | Muse Spark 1.1 |
| Output price / 1M | $15 ↗ | $4.25 ↗ | Muse Spark 1.1 |
| Cached input / 1M | $0.25 ↗ | $0.15 ↗ | Muse Spark 1.1 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $17.5 | $5.5 | Muse Spark 1.1 |
| Modalities | text · vision | text · vision · video · audio | Muse Spark 1.1 |
| Released | 2026-03-05 | 2026-07-09 | — |
| Cited benchmark scores | 50 | 30 | — |
Reliability
Provider status
Live from /statusMore matchups
GPT-5.4 vs …
Models sharing the most benchmarksMore matchups
Muse Spark 1.1 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GPT-5.4 and Muse Spark 1.1 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.