Compare / head-to-head
GPT-6 Lunavs
Muse Spark 1.1
GPT-6 Luna leads 8 of 14 shared benchmarks. GPT-6 Luna is 9.2x cheaper per token. GPT-6 Luna has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
8 – 6
GPT-6 Luna leads
Cheaper per token
GPT-6 Luna
9.2x cheaper, input + output
Larger context
GPT-6 Luna
1.1M tokens
Providers
2 providers
OpenAI · Meta
GPT-6 Luna
OpenAI · released 2026-09-22
textvision
Muse Spark 1.1
Meta · released 2026-07-09
textvisionvideoaudio
Quality
Benchmark matrix
14 shared · 8 only GPT-6 Luna · 16 only Muse Spark 1.1| Benchmark | GPT-6 Luna | Muse Spark 1.1 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 14 | ||||
| LMArena Elo | 1442.9 ↗ | 1491.3 ↗ | -48.4 | Muse Spark 1.1 |
| APEX-Agents (Mercor) | 44.3% ↗ | 31.8% ↗ | +12.5 pt | GPT-6 Luna |
| DeepSWE v1.1 | 66.6% ↗ | 53.3% ↗ | +13.3 pt | GPT-6 Luna |
| LiveBench Agentic Coding (LiveBench) | 51.2% ↗ | 58.5% ↗ | -7.3 pt | Muse Spark 1.1 |
| LiveBench Coding (LiveBench) | 79% ↗ | 77.2% ↗ | +1.8 pt | GPT-6 Luna |
| LiveBench Data Analysis (LiveBench) | 73.4% ↗ | 72.5% ↗ | +0.9 pt | GPT-6 Luna |
| LiveBench Instruction Following (LiveBench) | 55.9% ↗ | 69.6% ↗ | -13.7 pt | Muse Spark 1.1 |
| LiveBench Language (LiveBench) | 73.8% ↗ | 74.3% ↗ | -0.5 pt | Muse Spark 1.1 |
| LiveBench Mathematics (LiveBench) | 89.1% ↗ | 87.1% ↗ | +2 pt | GPT-6 Luna |
| LiveBench Reasoning (LiveBench) | 81.8% ↗ | 87.7% ↗ | -5.9 pt | Muse Spark 1.1 |
| LMArena Agent (LMArena) | 0.0135 ↗ | -0.0488 ↗ | +0.1 | GPT-6 Luna |
| LMArena WebDev (LMArena) | 1578.7 ↗ | 1541.7 ↗ | +37 | GPT-6 Luna |
| SAGE (Vals AI) | 48.1% ↗ | 45.6% ↗ | +2.5 pt | GPT-6 Luna |
| SimpleQA Verified | 41.4% ↗epoch run | 57.8% ↗epoch run | -16.4 pt | Muse Spark 1.1 |
| Only GPT-6 Luna reports · 8 | ||||
| GPQA Diamond | 90.5% ↗epoch run | not reported | — | — |
| Chess Puzzles (Epoch AI run) | 31% ↗epoch run | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 56.1% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 78.9% ↗epoch run | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 44.2% ↗epoch run | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 7% ↗epoch run | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 98.9% ↗epoch run | not reported | — | — |
| Terminal-Bench 4.0 (Vals AI) | 13.6% ↗ | not reported | — | — |
| Only Muse Spark 1.1 reports · 16 | ||||
| BabyVision | not reported | 76.3% ↗ | — | — |
| CharXiv Reasoning | not reported | 88.4% ↗ | — | — |
| DeepSWE v1.1 (Datacurve) | not reported | 53.3% ↗ | — | — |
| Finance Agent v2 | not reported | 57.2% ↗ | — | — |
| Humanity's Last Exam (with tools) | not reported | 62.1% ↗ | — | — |
| JobBench | not reported | 54.7% ↗ | — | — |
| LMArena Vision (LMArena) | not reported | 1281.1 ↗ | — | — |
| MCP Atlas | not reported | 88.1% ↗ | — | — |
| OSWorld-Verified | not reported | 80.8% ↗ | — | — |
| OSWorld-Verified (XLANG) | not reported | 80.7% ↗ | — | — |
| SWE-Bench Pro | not reported | 61.5% ↗ | — | — |
| tau2-bench Banking Knowledge (Sierra) | not reported | 40.5% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 80% ↗ | — | — |
| Toolathlon-Verified | not reported | 75.6% ↗ | — | — |
| Toolathlon-Verified (HKUST) | not reported | 75.6% ↗ | — | — |
| Vending-Bench 2 (Andon Labs) | not reported | 6520.48 ↗ | — | — |
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-6 Luna 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-6 Luna | Muse Spark 1.1 | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 1.0M tokens | GPT-6 Luna |
| Max output | 128K tokens | — | — |
| Input price / 1M | $0.1 ↗ | $1.25 ↗ | GPT-6 Luna |
| Output price / 1M | $0.5 ↗ | $4.25 ↗ | GPT-6 Luna |
| Cached input / 1M | $0.01 ↗ | $0.15 ↗ | GPT-6 Luna |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $0.6 | $5.5 | GPT-6 Luna |
| Modalities | text · vision | text · vision · video · audio | Muse Spark 1.1 |
| Released | 2026-09-22 | 2026-07-09 | — |
| Cited benchmark scores | 22 | 30 | — |
Reliability
Provider status
Live from /statusMore matchups
GPT-6 Luna 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-6 Luna and Muse Spark 1.1 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.