Gemini 3.1 Pro vs Muse Spark Open
Wins 4 of 7 areas
Reasoning · Facts · Images and charts · Long documents
Wins 3 of 7 areas
Coding · Agents · Math
Gemini 3.1 Pro wins more areas, narrowly.Muse Spark Open is cheaper and better at agents.
Scores updated · 16 tests both models report · How we compare
Where each one wins
Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- ReasoningHard problems that need careful thinking30Gemini 3.1 Pro3 of 3 tests
- FactsGetting facts right instead of making them up21Gemini 3.1 Pro2 of 3 tests
- Images and chartsUnderstanding pictures, charts and video10Gemini 3.1 Pro1 of 1 test
- Long documentsFinding answers in very long texts10Gemini 3.1 Pro1 of 1 test
- AgentsCarrying out multi-step tasks on its own02Muse Spark Open2 of 2 tests
- MathCompetition and research-level math02Muse Spark Open2 of 2 tests
- CodingWriting and fixing software01Muse Spark Open1 of 2 tests · 1 tie
Images and charts and long documents rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Muse Spark Open costs 61% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Gemini 3.1 Pro pulls ahead
- Short factual questions, answered correctlySimpleQA Verified+16.9points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+15.6points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+5.1points ahead
Where Muse Spark Open pulls ahead
- Real work tasks from 44 professionsGDPVal+30.5points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+26.8points ahead
- Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+10.1points ahead
Every test, side by side
All 16 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingMuse Spark Open
- Terminal-Bench 2.1Muse Spark Open by 2.673.876.4+2.6
- SciCodetie58.758.4tie
AgentsMuse Spark Open
- GDPValMuse Spark Open by 30.514.645.1+30.5
- Terminal-Bench 4.0Muse Spark Open by 4.148.1+4.1
ReasoningGemini 3.1 Pro
- GPQA DiamondGemini 3.1 Pro by 5.194.189+5.1
- Humanity's Last ExamGemini 3.1 Pro by 3.14743.9+3.1
- CritPtGemini 3.1 Pro by 2.817.714.9+2.8
FactsGemini 3.1 Pro
- AA-Omniscience · Non-hallucinationMuse Spark Open by 26.849.175.9+26.8
- SimpleQA VerifiedGemini 3.1 Pro by 16.973.556.6+16.9
- AA-Omniscience · AccuracyGemini 3.1 Pro by 15.654.939.3+15.6
Images and chartsGemini 3.1 Pro
- MMMU-ProGemini 3.1 Pro by 1.582.480.9+1.5
MathMuse Spark Open
- FrontierMath Tiers 1-3 (v2)Muse Spark Open by 10.159.669.8+10.1
- FrontierMath Tier 4Muse Spark Open by 4.926.831.7+4.9
Other results2 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AA IntelligenceMuse Spark Open by 9.229.738.9+9.2
- AA-OmniscienceGemini 3.1 Pro by 7.231.924.6+7.2
Questions people ask
Which is better, Gemini 3.1 Pro or Muse Spark Open?
Gemini 3.1 Pro wins four of the seven areas where both have results: reasoning, facts, images and charts and long documents. Muse Spark Open wins coding, agents and math, and costs 61% less.
Which is better for coding?
Muse Spark Open. It wins 1 of the 2 coding tests both models report; Gemini 3.1 Pro wins none, and 1 is a tie.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; Muse Spark Open costs $1.25 and $4.25. That makes Muse Spark Open about 61% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 14 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 2 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.