GLM-5.1 by Zhipu AI scores 66.9 out of 100 on the Neura Intelligence Index, ranking #85 among tracked AI models. This composite score is computed from 6 individual benchmarks across coding, math, reasoning, and language categories.

GLM-5.1 costs $1.4/1M input tokens and $4.4/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $65.

Yes, GLM-5.1 has open weights available under the mit license. You can download and self-host the model.

GLM-5.1 supports a context window of 200K tokens, allowing it to process very long documents, codebases, and conversations in a single request.

GLM-5.1 achieves its highest score on GPQA Diamond with a score of 86.2%. This benchmark evaluates 448 graduate-level science questions (biology, chemistry, physics) designed to be hard for non-experts.