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Step 5 Preview
GLM-4.5
GLM-4.5 is an open-weight model from Z.ai, released Jul 25, 2025. It ranks #95 of 351 on the LMArena text leaderboard with a rating of 1430. It costs $0.60 per million input tokens and $2.20 per million output tokens, with a 128K-token context window.
- Developer
- Z.ai (Zhipu AI)
- Released
- Jul 25, 2025
- Context window
- 128K
- Price in / out, per 1M tokens
- $0.60 / $2.20
- Weights
- Open · MIT
- Inputs
- Text
- Reasoning
- Yes
- Tool use
- Yes
- Hugging Face downloads, 30 days
- 113.8K
- Hugging Face likes
- 1.4K
The rating LMArena published at each update since Aug 4, 2025. Ratings move as votes come in and new models join.
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| LiveCodeBenchCoding | 67.45% | 97 / 143 | $0.6 / $2.2 | |
| MedQAMedicine | 89.97% | 48 / 92 | $0.6 / $2.2 | |
| GPQA DiamondReasoning | 72.22% | 91 / 138 | $0.6 / $2.2 | |
| MMLU-ProReasoning | 81.22% | 85 / 138 | $0.6 / $2.2 | |
| AIMEReasoning | 86.67% | 31 / 96 | $0.6 / $2.2 |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1430 | 95 / 351 | 23.8K |
| CodingLMArena | 1434 | 131 / 346 | 4.7K |
| MathLMArena | 1427 | 108 / 339 | 1.4K |
| Creative writingLMArena | 1395 | 108 / 349 | 3.1K |
| Instruction followingLMArena | 1404 | 119 / 351 | 6.2K |
| Hard promptsLMArena | 1429 | 112 / 351 | 11.1K |
| Multi-turnLMArena | 1415 | 128 / 349 | 3.7K |
| Long queriesLMArena | 1413 | 125 / 330 | 5.1K |
| ExpertLMArena | 1433 | 113 / 305 | 1.2K |
| Legal and governmentIndustries | 1438 | 94 / 325 | 1.5K |
| Medicine and healthcareIndustries | 1455 | 65 / 325 | 1.4K |
| Business and financeIndustries | 1420 | 103 / 344 | 4.2K |
| ChineseLanguages | 1465 | 96 / 328 | 1.8K |
| SpanishLanguages | 1454 | 51 / 249 | 678 |
| GermanLanguages | 1407 | 118 / 261 | 539 |
| FrenchLanguages | 1419 | 134 / 252 | 340 |
| JapaneseLanguages | 1415 | 59 / 236 | 775 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare GLM-4.5
Z.ai (Zhipu AI)
A Tsinghua spin-out that builds the GLM family of open bilingual models. Founded 2019, based in Beijing. z.ai
Questions
Who makes GLM-4.5?
GLM-4.5 is made by Z.ai (Zhipu AI), founded 2019 and based in Beijing.
How much does GLM-4.5 cost?
$0.60 per million input tokens and $2.20 per million output tokens, at its provider’s list price.
What is GLM-4.5’s context window?
128K tokens (131,072).
How does GLM-4.5 rank?
#95 of 351 on LMArena’s text leaderboard, rated 1430 (95% interval 1425–1435) from 23,791 votes, as of Oct 22, 2026.
Is GLM-4.5 open source?
GLM-4.5 has open weights under the MIT license, downloadable from Hugging Face (zai-org/GLM-4.5).