Qwen3.8-Max vs Gemini 3.5 Flash

  • Qwen3.8-Max and Gemini 3.5 Flash are level on LMArena’s text leaderboard (1484 and 1482).
  • Qwen3.8-Max is cheaper: $2 / $6 per million input / output tokens, against $1.50 / $9 for Gemini 3.5 Flash.
  • On the 11 Vals AI benchmarks both have taken, Qwen3.8-Max wins 8 and Gemini 3.5 Flash wins 3 (Qwen3.8-Max: Terminal-Bench 4.0, SWE-bench, Vibe Code Bench).
LMArena text rating over time
14701480149015001510May 26Jun 26Aug 26Sep 26Oct 26
LatestQwen3.8-Max 1484Gemini 3.5 Flash 1482

Side by side

Models (2/6)
  • Qwen3.8-Max
  • Gemini 3.5 Flash
BenchmarkQwen3.8-MaxGemini 3.5 Flash
The model
LabAlibabaGoogle
Released2026-09-032026-05-19
WeightsProprietaryProprietary
Context window1M1M
Input, per 1M tokens$2$1.50
Output, per 1M tokens$6$9
LMArena, people’s votes
LMArena TextMillions of people compare two anonymous models side by side and vote for the better answer1484#15 of 3511482#18 of 351
LMArena WebDevPeople ask two anonymous models to build the same web app, try both and vote for the better one1673#12 of 1241499#63 of 124
LMArena VisionSide-by-side votes on prompts that include an image1313#10 of 1461308#13 of 146
LMArena CodingLMArena’s text votes on prompts that ask for code1503#21 of 3461493#33 of 346
LMArena MathLMArena’s text votes on math prompts1501#15 of 3391504#12 of 339
LMArena Creative writingLMArena’s text votes on stories, poems and other creative writing1477#16 of 3491470#17 of 349
LMArena Hard promptsLMArena’s text votes on the hardest prompts1497#16 of 3511488#23 of 351
LMArena Instruction followingLMArena’s text votes on prompts with specific instructions to follow1481#18 of 3511467#33 of 351
Vals AI, overall
Vals IndexVals AI’s headline score59.05%#11 of 27—
Vals AI, coding
Terminal-Bench 4.0Frontier-difficulty tasks an agent completes in a real terminal34.34%#18 of 556.06%#45 of 55
SWE-benchReal GitHub issues from open-source projects85.60%#16 of 8578.80%#27 of 85
Vibe Code BenchBuilding complete web apps from a plain-language brief, graded on whether the app works64.70%#49 of 11548.68%#60 of 115
Code MigrationRewriting working programs in a new language, graded on whether the new program still passes its tests57.19%#10 of 28—
LiveCodeBenchFresh competitive programming problems, collected after models’ training cut-offs to avoid contamination87.85%#10 of 14387.60%#12 of 143
Vals AI, finance
Finance AgentThe core tasks of a financial analyst, done as an agent with research tools58.83%#23 of 31—
Finance IndexVals AI’s composite of finance tasks61.66%#5 of 31—
Tax Agent BenchAgentic research into US corporate tax questions32.09%#22 of 7621.65%#47 of 76
Vals AI, law
Legal IndexVals AI’s composite of legal tasks73.90%#5 of 28—
Legal Research BenchAgentic US legal research46.15%#17 of 8530.77%#49 of 85
Vals AI, medicine
MedCodeAssigning the right medical billing codes from clinical notes40.67%#62 of 10755.83%#6 of 107
Vals AI, reasoning
GPQA DiamondGraduate-level questions in biology, physics and chemistry that experts answer well and search does not93.69%#6 of 13892.68%#14 of 138
MMLU-ProHarder, reasoning-focused multiple choice across 14 subjects, from law to engineering88.60%#18 of 13889.52%#10 of 138
MMMUCollege-level questions that need both an image and text88.03%#12 of 9388.27%#8 of 93
Terminal-Bench ScienceExpert-written scientific research workflows, run by an agent in a terminal12.86%#13 of 425.71%#21 of 42

Add models in the compare tool.

Questions

Which is better, Qwen3.8-Max or Gemini 3.5 Flash?

Qwen3.8-Max and Gemini 3.5 Flash are level on LMArena’s text leaderboard (1484 and 1482). Qwen3.8-Max is cheaper: $2 / $6 per million input / output tokens, against $1.50 / $9 for Gemini 3.5 Flash. On the 11 Vals AI benchmarks both have taken, Qwen3.8-Max wins 8 and Gemini 3.5 Flash wins 3 (Qwen3.8-Max: Terminal-Bench 4.0, SWE-bench, Vibe Code Bench).

Which is cheaper, Qwen3.8-Max or Gemini 3.5 Flash?

Qwen3.8-Max is cheaper: $2 / $6 per million input / output tokens, against $1.50 / $9 for Gemini 3.5 Flash.

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”.