Comparing 2 models

Muse Spark 1.3 vs GPT-6.1 Sol

Benchmarks through

Verdict

GPT-6.1 Sol places higher on 13 of the 14 tasks where both are ranked. Muse Spark 1.3 costs 1.6x less per input token. GPT-6.1 Sol accepts 1.0x more context.

  • Choose Muse Spark 1.3 for a General Assistant (#4).
  • Choose GPT-6.1 Sol for Image Understanding (#1), Translation (#2), JSON & Schema Output (#2).

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.

metric
Model 1Muse Spark 1.3
Model 2GPT-6.1 Sol
Best for
a General Assistant (#4)
Image Understanding (#1)
Provider
meta
openai
Context
1.0M
1.1MBest
Input / 1M
$1.25Best
$2
Output / 1M
$4.25Best
$10
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
—
—
Released
Sep 2, 2026
Sep 29, 2026

Measured head to head

Benchmarks both models were run on

EvaluationMuse Spark 1.3GPT-6.1 SolSource
Design Arena Coding1353 Elo1346 Elosource · 2026-10-16
Design Arena UI1344 Elo1331 Elosource · 2026-10-16
Design Arena Website1348 Elo1323 Elosource · 2026-10-16
FrontierMath Tiers 1-3 (Epoch AI)74% ± 2.693.7% ± 1.4source · 2026-09-18
FrontierMath Tiers 1-3 (Epoch AI)74.4% ± 2.693.7% ± 1.4source · 2026-09-16
LiveBench Agentic Coding64.1%54.5%source · 2026-10-16
LiveBench Coding81.1%80.4%source · 2026-10-16
LiveBench Data Analysis79.6%82.7%source · 2026-10-16
LiveBench Instruction Following78%74.2%source · 2026-10-16
LiveBench Language82.8%90.1%source · 2026-10-16
LiveBench Math96.0%96.8%source · 2026-10-16
LiveBench Reasoning89.7%92.6%source · 2026-10-16
LMArena Agent3.614.8source · 2026-10-14
LMArena Agent Bash Recovery6.14.5source · 2026-10-08
LMArena Agent Steerability5.614.7source · 2026-10-14
LMArena Agent Task Outcome4.915.7source · 2026-10-14
LMArena Agent Tool Hallucination0.60.6source · 2026-10-14
LMArena Creative Writing1460 Elo1430 Elosource · 2026-10-15
LMArena Instruction Following1478 Elo1469 Elosource · 2026-10-15
LMArena Long Query1488 Elo1464 Elosource · 2026-10-15
LMArena Math1496 Elo1470 Elosource · 2026-10-15
LMArena Text1494 Elo1484 Elosource · 2026-10-15
LMArena Text Factuality1479 Elo1465 Elosource · 2026-10-15
LMArena Vision1290 Elo1294 Elosource · 2026-10-09
LMArena Vision Diagrams1321 Elo1311 Elosource · 2026-10-09
LMArena Vision OCR1306 Elo1295 Elosource · 2026-10-09
LMArena WebDev1659 Elo1760 Elosource · 2026-10-13
LMArena WebDev Image-to-Web1642 Elo1703 Elosource · 2026-10-09
OTIS Mock AIME (Epoch AI)99.2% ± 0.6100% ± 0source · 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.