GLM-5.1 API is now open source and available on APIYI: 7 key points analyzing this new open-source king that topped SWE-Bench Pro
On April 7, 2026, Z.ai (formerly Zhipu AI) officially released the full weights of GLM-5.1 under the MIT license to the Hugging Face repository zai-org/GLM-5. This release immediately caused a stir in the English-speaking AI community—not just because it's "another open-source Large Language Model," but because it topped the global charts on the SWE-Bench Pro…
