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Gemini 3.1 Pro vs Muse Spark 1.2

Google · released

Wins 4 of 8 areas

Reasoning · Facts · Long documents · Following instructions

Meta · released

Wins 2 of 8 areas

Coding · Agents

Gemini 3.1 Pro wins more areas, narrowly.Muse Spark 1.2 is cheaper and better at coding.

Both rank among the ten best models we track in facts.

Scores updated · 29 tests both models report · How we compare

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.

Gemini 3.1 Pro$2.00 to read · $12.00 to write$14Price from Google's own price page
Muse Spark 1.2$1.25 to read · $4.25 to write$5.50Price from Meta's own price page

Muse Spark 1.2 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+13.2points aheadGemini 3.1 Pro73.5Muse Spark 1.260.3
  • Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+9.5points aheadGemini 3.1 Pro54.9Muse Spark 1.245.4
  • Common-sense trick questionsSimpleBench+5.1points aheadGemini 3.1 Pro79.6Muse Spark 1.274.5

Where Muse Spark 1.2 pulls ahead

  • Real work tasks from 44 professionsGDPVal+34.2points aheadMuse Spark 1.248.9Gemini 3.1 Pro14.7
  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+17.6points aheadMuse Spark 1.266.7Gemini 3.1 Pro49.1
  • Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+13.5points aheadMuse Spark 1.257.6Gemini 3.1 Pro44.1

Every test, side by side

All 29 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingMuse Spark 1.2

Full coding ranking

AgentsMuse Spark 1.2
  • GDPValMuse Spark 1.2 by 34.214.748.9+34.2
  • τ-Bench V3 · BankingMuse Spark 1.2 by 13.421.434.8+13.4
  • Terminal-Bench 4.0Muse Spark 1.2 by 3.147.1+3.1

Full agents ranking

ReasoningGemini 3.1 Pro

Full reasoning ranking

FactsGemini 3.1 Pro

Full facts ranking

Images and chartsEven

Full images and charts ranking

MathEven

Full math ranking

Long documentsGemini 3.1 Pro
  • AA-LCRGemini 3.1 Pro by 38279+3

Full long documents ranking

Following instructionsGemini 3.1 Pro

Full following instructions ranking

Other results9 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.

Questions people ask

Which is better, Gemini 3.1 Pro or Muse Spark 1.2?

Gemini 3.1 Pro wins four of the eight areas we test: reasoning, facts, long documents and following instructions. Muse Spark 1.2 wins coding and agents, and costs 61% less. They are level on images and charts and math.

Which is better for coding?

Muse Spark 1.2. It wins 4 of the 5 coding tests both models report; Gemini 3.1 Pro wins 1.

Which is cheaper?

Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; Muse Spark 1.2 costs $1.25 and $4.25. That makes Muse Spark 1.2 about 61% cheaper for the same work.

How do you compare the two?

We use the 29 benchmark tests both models have published scores on. The verdict counts the 20 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 9 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.