Vibe CodingZ.ai (Zhipu)
GLM-5.2
Z.ai's MIT-licensed, 1M-token open-weight model — beats GPT-5.5 on FrontierSWE at a fraction of the cost, with full weights to self-host.
GLM-5.2 is Z.ai’s (formerly Zhipu AI) flagship open-weight model — a 753-billion-parameter mixture-of-experts design released under the MIT license, with a 1M-token context window and full downloadable weights.
Why it stands out
- MIT-licensed, 753B-parameter MoE weights, fully self-hostable with no usage restrictions.
- 1M-token context window with up to 131K tokens of output in a single response.
- Beats GPT-5.5 on FrontierSWE at roughly a sixth of the cost, per Zhipu’s own benchmarking.
- Selectable High/Max reasoning modes, letting you trade latency for depth on harder multi-step coding tasks.
Good for
Teams that want a genuinely open, frontier-tier coding model to self-host, fine-tune, or run at scale without per-token lock-in.