hf:zai-org/GLM-5

Price: $1.00/mtok in, $3.00/mtok out

Currently the smartest/most capable coding and agentic model hosted directly by Synthetic.

Also, barring GLM 5.1, the most capable open weight model period, trading blows with SOTA proprietary models like Opus 4.6 and GPT-5.4.

Consequently, it is also currently the most expensive model; while its output cost is actually lower than Kimi K2.5’s, GLM 5’s input costs are 2x Kimi K2.5’s, and input tokens usually dominate output tokens in coding and agentic use cases, meaning that input prices dominate when comparing model cost.

• Pros: Excels at almost all coding (see below) and long-horizon agentic work. Widely considered to be exceptionally good at code review.

• Cons: Quite a bit worse at user interface work. Overkill for basic assistant work, such as for OpenClaw. Worse at lateral thinking than other frontier models (needs more express guidance).