Gemini 3.8 Flash vs Muse Spark 1.1

  • Gemini 3.8 Flash rates higher on LMArena’s text leaderboard: 1498 against 1478.
  • Gemini 3.8 Flash is cheaper: $0.82 / $4.13 per million input / output tokens, against $1.25 / $4.25 for Muse Spark 1.1.
  • On the 7 Vals AI benchmarks both have taken, Gemini 3.8 Flash wins 6 and Muse Spark 1.1 wins 1 (Gemini 3.8 Flash: Vibe Code Bench, LiveCodeBench, Legal Research Bench).
LMArena text rating over time
14601470148014901500Jul 10Aug 5Aug 31Sep 26Oct 22
LatestMuse Spark 1.1 1478

Side by side

Models (2/6)
  • Gemini 3.8 Flash
  • Muse Spark 1.1
BenchmarkGemini 3.8 FlashMuse Spark 1.1
The model
LabGoogleMeta
Released2026-09-022026-07-16
WeightsProprietaryProprietary
Context window1M1M
Input, per 1M tokens$0.82$1.25
Output, per 1M tokens$4.13$4.25
LMArena, people’s votes
LMArena TextMillions of people compare two anonymous models side by side and vote for the better answer1498#8 of 3511478#22 of 351
LMArena WebDevPeople ask two anonymous models to build the same web app, try both and vote for the better one1585#36 of 1241543#47 of 124
LMArena VisionSide-by-side votes on prompts that include an image1315#7 of 1461293#26 of 146
LMArena CodingLMArena’s text votes on prompts that ask for code1508#17 of 3461498#28 of 346
LMArena MathLMArena’s text votes on math prompts1532#4 of 3391481#33 of 339
LMArena Creative writingLMArena’s text votes on stories, poems and other creative writing1489#8 of 3491435#57 of 349
LMArena Hard promptsLMArena’s text votes on the hardest prompts1509#9 of 3511485#27 of 351
LMArena Instruction followingLMArena’s text votes on prompts with specific instructions to follow1492#11 of 3511456#45 of 351
Vals AI, overall
Vals IndexVals AI’s headline score55.95%#15 of 27—
Vals AI, coding
Terminal-Bench 4.0Frontier-difficulty tasks an agent completes in a real terminal19.70%#31 of 55—
SWE-benchReal GitHub issues from open-source projects80.00%#23 of 8582.00%#20 of 85
Vibe Code BenchBuilding complete web apps from a plain-language brief, graded on whether the app works78.65%#29 of 11572.16%#40 of 115
Code MigrationRewriting working programs in a new language, graded on whether the new program still passes its tests38.65%#22 of 28—
LiveCodeBenchFresh competitive programming problems, collected after models’ training cut-offs to avoid contamination89.48%#3 of 14385.91%#29 of 143
Vals AI, finance
Finance AgentThe core tasks of a financial analyst, done as an agent with research tools65.76%#5 of 31—
Finance IndexVals AI’s composite of finance tasks60.46%#9 of 31—
Tax Agent BenchAgentic research into US corporate tax questions32.12%#21 of 76—
Vals AI, law
Legal IndexVals AI’s composite of legal tasks69.78%#14 of 28—
Legal Research BenchAgentic US legal research38.94%#34 of 8537.98%#39 of 85
Vals AI, medicine
MedCodeAssigning the right medical billing codes from clinical notes48.13%#31 of 107—
Vals AI, reasoning
GPQA DiamondGraduate-level questions in biology, physics and chemistry that experts answer well and search does not94.44%#4 of 13891.16%#23 of 138
MMLU-ProHarder, reasoning-focused multiple choice across 14 subjects, from law to engineering90.22%#5 of 13888.73%#17 of 138
MMMUCollege-level questions that need both an image and text89.08%#4 of 9386.59%#18 of 93
Terminal-Bench ScienceExpert-written scientific research workflows, run by an agent in a terminal8.57%#19 of 42—

Add models in the compare tool.

Questions

Which is better, Gemini 3.8 Flash or Muse Spark 1.1?

Gemini 3.8 Flash rates higher on LMArena’s text leaderboard: 1498 against 1478. Gemini 3.8 Flash is cheaper: $0.82 / $4.13 per million input / output tokens, against $1.25 / $4.25 for Muse Spark 1.1. On the 7 Vals AI benchmarks both have taken, Gemini 3.8 Flash wins 6 and Muse Spark 1.1 wins 1 (Gemini 3.8 Flash: Vibe Code Bench, LiveCodeBench, Legal Research Bench).

Which is cheaper, Gemini 3.8 Flash or Muse Spark 1.1?

Gemini 3.8 Flash is cheaper: $0.82 / $4.13 per million input / output tokens, against $1.25 / $4.25 for Muse Spark 1.1.

Sources

Every number on this page comes from these sources; models without a published number show none. Download the data. Cite as “Nexus Explorer, nexus.inc/models”.