Comparing 2 models
Muse Spark 1.3 vs GPT-6 Astra
Benchmarks through
Verdict
GPT-6 Astra places higher on 10 of the 15 tasks where both are ranked. Muse Spark 1.3 costs 8.0x less per input token. GPT-6 Astra accepts 1.0x more context.
- Choose Muse Spark 1.3 for a General Assistant (#4), Creative Writing (#5), JSON & Schema Output (#5).
- Choose GPT-6 Astra for Translation (#4), Debugging & Code Review (#4), Logic & Problem Solving (#4).
Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.
Measured head to head
Benchmarks both models were run on
| Evaluation | Muse Spark 1.3 | GPT-6 Astra | Source |
|---|---|---|---|
| FrontierMath Tiers 1-3 (Epoch AI) | 74% ± 2.6 | 93.7% ± 1.4 | source · 2026-09-18 |
| FrontierMath Tiers 1-3 (Epoch AI) | 74.4% ± 2.6 | 93.7% ± 1.4 | source · 2026-09-16 |
| LiveBench Agentic Coding | 64.1% | 57.3% | source · 2026-10-16 |
| LiveBench Coding | 81.1% | 80.4% | source · 2026-10-16 |
| LiveBench Data Analysis | 79.6% | 83.0% | source · 2026-10-16 |
| LiveBench Instruction Following | 78% | 75.6% | source · 2026-10-16 |
| LiveBench Language | 82.8% | 89.4% | source · 2026-10-16 |
| LiveBench Math | 96.0% | 96.8% | source · 2026-10-16 |
| LiveBench Reasoning | 89.7% | 92.7% | source · 2026-10-16 |
| LMArena Agent | 3.6 | 13.7 | source · 2026-10-14 |
| LMArena Agent Bash Recovery | 6.1 | 5.5 | source · 2026-10-08 |
| LMArena Agent Steerability | 5.6 | 14.6 | source · 2026-10-14 |
| LMArena Agent Task Outcome | 4.9 | 12.5 | source · 2026-10-14 |
| LMArena Agent Tool Hallucination | 0.6 | 0.6 | source · 2026-10-14 |
| LMArena Creative Writing | 1460 Elo | 1421 Elo | source · 2026-10-15 |
| LMArena Instruction Following | 1478 Elo | 1455 Elo | source · 2026-10-15 |
| LMArena Long Query | 1488 Elo | 1461 Elo | source · 2026-10-15 |
| LMArena Math | 1496 Elo | 1465 Elo | source · 2026-10-15 |
| LMArena Text | 1494 Elo | 1477 Elo | source · 2026-10-15 |
| LMArena Text Factuality | 1479 Elo | 1466 Elo | source · 2026-10-15 |
| LMArena Vision | 1290 Elo | 1286 Elo | source · 2026-10-09 |
| LMArena Vision Diagrams | 1321 Elo | 1311 Elo | source · 2026-10-09 |
| LMArena Vision OCR | 1306 Elo | 1302 Elo | source · 2026-10-09 |
| LMArena WebDev | 1659 Elo | 1780 Elo | source · 2026-10-13 |
| LMArena WebDev Image-to-Web | 1642 Elo | 1731 Elo | source · 2026-10-09 |
| OTIS Mock AIME (Epoch AI) | 99.2% ± 0.6 | 100% ± 0 | source · 2026-09-17 |
| Terminal-Bench (4.0) | 14.6% | 58.2% | source · 2026-10-16 |
Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.
task evidence
How they place when the question changes
Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.