MiMo-V2.6-Pro vs Claude Fable 5

  • MiMo-V2.6-Pro and Claude Fable 5 are level on LMArena’s text leaderboard (1491 and 1491).
  • MiMo-V2.6-Pro is cheaper: $0.43 / $0.87 per million input / output tokens, against $10 / $50 for Claude Fable 5.
  • MiMo-V2.6-Pro has the longer context window: 1.1M tokens against 1M.
  • On the 6 Vals AI benchmarks both have taken, MiMo-V2.6-Pro wins 0 and Claude Fable 5 wins 6.
LMArena text rating over time
14801488149515031510Jun 26Jul 26Aug 26Sep 26Oct 26
LatestMiMo-V2.6-Pro 1491Claude Fable 5 1491

Side by side

Models (2/6)
  • MiMo-V2.6-Pro
  • Claude Fable 5
BenchmarkMiMo-V2.6-ProClaude Fable 5
The model
LabXiaomiAnthropic
Released2026-09-212026-06-09
WeightsOpenProprietary
Context window1.1M1M
Input, per 1M tokens$0.43$10
Output, per 1M tokens$0.87$50
LMArena, people’s votes
LMArena TextMillions of people compare two anonymous models side by side and vote for the better answer1491#11 of 3511491#12 of 351
LMArena WebDevPeople ask two anonymous models to build the same web app, try both and vote for the better one1625#23 of 1241624#24 of 124
LMArena VisionSide-by-side votes on prompts that include an image1263#53 of 1461325#1 of 146
LMArena CodingLMArena’s text votes on prompts that ask for code1533#5 of 3461518#10 of 346
LMArena MathLMArena’s text votes on math prompts1500#16 of 3391516#8 of 339
LMArena Creative writingLMArena’s text votes on stories, poems and other creative writing1466#20 of 3491493#6 of 349
LMArena Hard promptsLMArena’s text votes on the hardest prompts1511#8 of 3511507#10 of 351
LMArena Instruction followingLMArena’s text votes on prompts with specific instructions to follow1491#12 of 3511502#8 of 351
Vals AI, overall
Vals IndexVals AI’s headline score57.81%#14 of 27—
Vals AI, coding
Terminal-Bench 4.0Frontier-difficulty tasks an agent completes in a real terminal31.31%#21 of 5541.41%#12 of 55
SWE-benchReal GitHub issues from open-source projects—95.00%#7 of 85
Vibe Code BenchBuilding complete web apps from a plain-language brief, graded on whether the app works85.22%#15 of 11590.35%#4 of 115
Code MigrationRewriting working programs in a new language, graded on whether the new program still passes its tests48.79%#16 of 28—
LiveCodeBenchFresh competitive programming problems, collected after models’ training cut-offs to avoid contamination—89.78%#2 of 143
Vals AI, finance
Finance AgentThe core tasks of a financial analyst, done as an agent with research tools64.26%#10 of 31—
Finance IndexVals AI’s composite of finance tasks57.85%#12 of 31—
Tax Agent BenchAgentic research into US corporate tax questions32.39%#19 of 7638.28%#11 of 76
Vals AI, law
Legal IndexVals AI’s composite of legal tasks72.14%#8 of 28—
Legal Research BenchAgentic US legal research47.12%#15 of 8549.52%#8 of 85
Vals AI, medicine
MedCodeAssigning the right medical billing codes from clinical notes44.97%#39 of 10756.07%#4 of 107
Vals AI, reasoning
GPQA DiamondGraduate-level questions in biology, physics and chemistry that experts answer well and search does not—93.18%#10 of 138
MMLU-ProHarder, reasoning-focused multiple choice across 14 subjects, from law to engineering—91.50%#3 of 138
MMMUCollege-level questions that need both an image and text—89.31%#3 of 93
Terminal-Bench ScienceExpert-written scientific research workflows, run by an agent in a terminal2.86%#33 of 4215.71%#12 of 42

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Questions

Which is better, MiMo-V2.6-Pro or Claude Fable 5?

MiMo-V2.6-Pro and Claude Fable 5 are level on LMArena’s text leaderboard (1491 and 1491). MiMo-V2.6-Pro is cheaper: $0.43 / $0.87 per million input / output tokens, against $10 / $50 for Claude Fable 5. MiMo-V2.6-Pro has the longer context window: 1.1M tokens against 1M. On the 6 Vals AI benchmarks both have taken, MiMo-V2.6-Pro wins 0 and Claude Fable 5 wins 6.

Which is cheaper, MiMo-V2.6-Pro or Claude Fable 5?

MiMo-V2.6-Pro is cheaper: $0.43 / $0.87 per million input / output tokens, against $10 / $50 for Claude Fable 5.

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”.