Muse GlimmervsKimi K2.5
Muse Glimmer | Kimi K2.5 | |
|---|---|---|
| Specifications | ||
Parameters | 30B | 1T |
Context window | — | 256k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 52% |
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | 51.2% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 76% | 76.8%Best |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | — | 31.9% |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | — | 21% |
Competitive coding LiveCodeBenchCoding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | — | 85% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | 51.7% | — |
Multi-step tool use MCP AtlasCan the AI chain together many tools and steps to complete one bigger task, rather than doing just a single thing? Higher is better. | 75.5% | — |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | 22% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 83.5% | 87.6%Best |
Agentic computer use OSWorld-VerifiedCan the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Higher is better. | 65.9% | — |
Knowledge work GDPval-AA v2economically valuable knowledge work (v2, re-based Elo) | 953 | — |
Chart reasoning CharXiv ReasoningCan the AI read and reason about complex charts and figures, not just text? Higher is better. | 78.8% | — |
Multimodal reasoning MMMU-ProA tougher version of MMMU — college-level questions that mix images, diagrams, and text together. Higher is better. | 74% | — |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1433 |
| Overview | ||
| Company | Meta | Moonshot AI |
| Release date | Aug 10 2026 | Jan 27 2026 |
| Access | Open Weight | Open Weight |
Which is better: Muse Glimmer or Kimi K2.5?
Kimi K2.5 leads Muse Glimmer on 2 of the 2 benchmarks they both report (SWE-Bench Verified, GPQA Diamond). Kimi K2.5 shipped 195 days before Muse Glimmer, so benchmark comparisons should account for the intervening progress.
Muse Glimmer has 30B parameters, while Kimi K2.5 has 1T.
On SWE-Bench Verified, Kimi K2.5 leads at 76.8% vs Muse Glimmer at 76%. On GPQA Diamond, Kimi K2.5 leads at 87.6% vs Muse Glimmer at 83.5%.
Frequently asked questions
Muse Glimmer was released by Meta on Aug 10 2026.
Kimi K2.5 was released by Moonshot AI on Jan 27 2026.
Kimi K2.5 leads on SWE-Bench Verified — Muse Glimmer 76% vs Kimi K2.5 76.8%.
Kimi K2.5 leads on GPQA Diamond — Muse Glimmer 83.5% vs Kimi K2.5 87.6%.
Other comparisons
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