GLM-5.1
GLM-5.1 is Z.AI’s post-training upgrade with 754 billion total and 40 billion active parameters in a MoE architecture, optimized for long-horizon agentic coding workflows with up to eight hours of autonomous execution. The context window spans 200,000 tokens, and the weights are available as an Open Weights model under the MIT license.
- Open Weights
- Frontier
- OpenRouter
- Text
- Instruction-Tuned
- Agentic Orchestrator
- Batch
Sovereign Risk: HIGH Z.AI (formerly Zhipu AI) is a Chinese company and subject to China’s National Security Law (NSL), which can enable state access to data. In February 2025, Germany’s BSI explicitly warned against the use of Chinese AI cloud services (BSI reference: Warning DeepSeek, 04.02.2025); this risk assessment applies analogously to all Chinese cloud AI providers that process user data on Chinese servers. With purely local inference, the Cloud Act-equivalent risk does not apply.
Key metrics
Score · Latency · Cost · Quality
- Total Score Silver
- 73.34
- Routine
- 44.56
- Reasoning
- 28.78
- LLM Judge Avg
- 3.74 / 5
- 100 Coverage
- Avg Task Duration
- 63.3s
- Batch
- Token Rate
- 64.84tok/s
- Output Rate
- P95 Latency
- 192.19s
- Top 5 %
- Total Tokens
- 149000
- Output Volume
- Cost per 1K
- $0.0035
- USD / 1K Requests
- Benchmark Cost
- $0.52
- Total · 149000 tok
Benchmark modules
10 modules · weighted · vs. model median & top performer
Token efficiency & latency
Consumption per module vs. model median
Token consumption per module
Performance profile
Key metrics – legend
Score
- Total Score
- Overall score derived from Routine and Reasoning scores. Basis for the fleet rank and tier assignment (Gold / Silver / Bronze).
- Routine
- Score for standard tasks: code generation, text transformation, structured outputs. Weighted by task complexity.
- Reasoning
- Score for analytical and logical tasks: multi-step problem solving, mathematical reasoning, structured argumentation.
- Rank
- Position in the fleet comparison, sorted by Total Score. Refers to the snapshot at the time of testing.
LLM Judge
- LLM Judge Ø
- Average quality rating by an independent judge model on a scale of 1–5.
- Coverage
- Share of tasks for which a judge rating is available. 100% means all responses were evaluated.
Latency & speed
- Avg. Task Duration
- Average time per task from the first to the last token of the response, measured across all benchmark tasks.
- Token Rate
- Output speed in tokens per second. Relevant for interactive applications and real-time streaming.
- P95 Latency
- 95th percentile of response times — shows outliers. Lower values mean fewer long wait times in edge cases.
Cost
- Cost per 1K
- API price per 1,000 output tokens in US dollars. Basis for cost calculation in production use.
- Benchmark Cost
- Total cost for the complete benchmark run of this model.