The Model Index
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Grok 4.7 vs Muse Spark Open

On the index (GPT-4 = 100), Grok 4.7 scores 168 and Muse Spark Open 167. Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.

Next to Grok 4.7
Presets
Grok 4.7
168151–184
WeightsClosed
ReleasedSep 2026
Price in / out$2.0 / $6.0
Context500K
Core tests taken6 of 9
Muse Spark Open
167151–184
WeightsOpen
ReleasedOct 2026
Price in / out$1.25 / $4.25
Context1.05M
Core tests taken6 of 9

Grok 4.7 and Muse Spark Open are too close to call (0 points apart, within the uncertainty), ahead on 4 of 6 shared core tests, at 1.5× the price.

Test by testthird-party results

Grok 4.7Muse Spark Open
0%25%50%75%100%REASONING & KNOWLEDGEGPQA Diamond (Epoch AI)GPQA Diamond (Epoch AI)SimpleQA VerifiedSimpleQA VerifiedMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)FrontierMath (tier 4)FrontierMath (tier 4)CODINGTerminal-Bench 4.0Terminal-Bench 4.0Code MigrationCode MigrationVibe Code Bench v1.1Vibe Code Bench v1.1AGENTSAPEX-AgentsAPEX-AgentsPROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHLAB-Vals-1.1HLAB-Vals-1.1Legal Research BenchLegal Research BenchTax Agent BenchTax Agent BenchNOVEL PROBLEMSARC-AGI-2ARC-AGI-2ARC-AGI-1ARC-AGI-1
Every result as a table
TestGrok 4.7Muse Spark Open
Reasoning & knowledge
GPQA Diamond (Epoch AI)92.7%88.6%
SimpleQA Verified56.0%56.6%
Maths
FrontierMath (tiers 1-3)53.0%69.8%
AIME-style maths (OTIS mock)98.1%98.1%
FrontierMath (tier 4)17.1%31.7%
Coding
Terminal-Bench 4.028.8%6.6%
Code Migration44.8%21.2%
Vibe Code Bench v1.186.2%76.2%
Agents
APEX-Agents54.6%33.4%
Professional work
Finance Agent (v2)52.3%61.3%
EMB67.0%53.7%
HLAB-Vals-1.118.3%25.0%
Legal Research Bench47.1%38.5%
Tax Agent Bench34.2%26.3%
Novel problems
ARC-AGI-261.4%57.5%
ARC-AGI-190.2%89.0%

Tests at least two of these models have taken. Bold rows are the core tests.

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