Z.ai
GLM-5.1
An open-weight model from Zhipu AI that offers performance competitive with leading closed models.
Our editorial assessment, based on the public sources listed below. Last reviewed .
- Overall rank
- #49
- Tier
- A
- Score
- 78.2
- Main category
- Overall
Strengths
- Achieves performance close to top-tier proprietary models like Claude.
- Available as an open-weight model, providing more control and customization.
- Part of a trend of open models matching closed AI capabilities.
Considerations
- As an open-weight model, it requires self-hosting and infrastructure management.
- May have a smaller context window (200K) compared to frontier models with 1M+.
Price
$1.40 / 1M input, $4.40 / 1M output tokens
Shown for reference — price is not part of the score.
Score breakdown
- Performance
- 83.0
- 55% of score
- Reputation
- 78.0
- 35% of score
- Recency
- 52.0
- 10% of score
The overall score combines these sub-scores using the weights shown. How we score →
Verification status
Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.
- Pricing
- Benchmark
- Reputation
- Feature list
Checked against the sources listed below.
Sources
- Eigent — GLM-5.2 launch (successor to GLM-5.1) (opens in a new tab)Accessed:
- MindStudio — What is GLM 5.1 (opens in a new tab)Accessed:
- Presenc AI — Zhipu / Z.ai GLM model lineage 2026 (opens in a new tab)Accessed:
- innfactory — GLM versions, benchmarks & availability (opens in a new tab)Accessed:
- Open Models at the Frontier - DiscreteStack (opens in a new tab)Accessed:
Show 4 more sources
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