GLM-5.1: benchmarks, price and rank
GLM-5.1 from Zhipu is 61st of 123 rated AI models on Spezia's leaderboard. It costs $1.05 in, $3.50 out per million tokens.
- 61st of 123 rated models
- Rating 1,241
- Rated on 13 benchmarks
- Open weights
- Released Apr 7, 2026
- 205,000 tokens of context
Where it is strongest
Not in the top tenth on any benchmark in use.
Where it falls behind
- 13th of 15 on CyberGym
- 45th of 56 on APEX-Agents
- 61st of 76 on FrontierMath
Price: $1.05 in, $3.50 out per million tokens.
Its headline results
The benchmarks that count most in the rating, with its place among the models measured the same way, and where each number came from.
- APEX-Agents40.9%
Long tasks written by investment banking analysts, management consultants and corporate lawyers from their own work, done across files and apps in a realistic work setup.
45th of 56. Independent result from Epoch AI.
- BrowseComp79.3%
Questions whose answers are hidden deep on the web and take many searches and pages to track down.
21st of 56. The maker's own number, from Zhipu AI, via LLM Stats.
- MCP Atlas71.8%
Multi-step tasks where the model has to pick and combine many real tools, connected through MCP, the standard way agents plug into apps and data.
18th of 33. The maker's own number, from Zhipu AI, via LLM Stats.
- SWE-Bench Pro58.4%
Long changes to real codebases in several languages, often across many files, including code from private and copyleft projects that models are unlikely to have seen.
24th of 50. The maker's own number, from Zhipu AI, via LLM Stats.
- Humanity's Last Exam52.3%
About 2,500 questions written by experts in more than a hundred fields to be as hard as they could make them, many needing a diagram or image.
15th of 74. The maker's own number, from Zhipu AI, via LLM Stats.
- Vending-Bench 2$5,634
The model runs a simulated vending machine business for a year on its own: finding suppliers, ordering stock, setting prices and paying the daily fees.
28th of 60. Independent result from Epoch AI.
- Toolathlon40.7%
Long tasks across many real apps and their tools, such as email, calendars, spreadsheets, code repositories and online stores.
29th of 37. The maker's own number, from Zhipu AI, via LLM Stats.
- SimpleBench55.1%
Multiple-choice puzzles about everyday situations, space, time and people, written to trip up models that pattern-match instead of think. Ordinary adults do well on them.
50th of 68. Independent result from Epoch AI.
- SimpleQA Verified34%
Short factual questions with one checked answer, asked without web search.
57th of 78. Independent result from Epoch AI.
- FrontierMath36.8%
Hundreds of new, unpublished math problems written by mathematicians, from hard undergraduate level up to research, with answers a computer can check.
61st of 76. Independent result from Epoch AI.
8 more results in its full profile.
Every result with its source, what it costs per task, what jumped with its release, side by side with any other model, and answers to your questions about when to use it.
Models ranked near it
How the rating works, and every benchmark it uses: the model leaderboard.