GLM-5.3 uses the same base model as GLM-5.2 — every gain comes from post-training. Compared with GLM-5.2, it is much better at complex coding and long-horizon tasks
GLM-5.3 can be customized with your data to improve responses. Fireworks uses LoRA to efficiently train and deploy your personalized model
GLM-5.3 is available via Fireworks' serverless API, where you pay per token. There are several ways to call the Fireworks API, including Fireworks' Python client, the REST API, or OpenAI's Python client.
On-demand deployments allow you to use GLM-5.3 on dedicated GPUs with Fireworks' high-performance serving stack with high reliability and no rate limits.
$1.40 / $0.26 / $4.40
Run queries immediately, pay only for usage
Per 1M Tokens (input/cached input/output)