ModelClock
API availability
Available in the API since Sep 16, 2026
Fireworks AI announced API availability for this model on 2026-09-16.
This date applies to API availability. Rollouts in consumer products or other hosting routes can happen on different dates.
- Hosting route
- Fireworks AI platform
- Affected scope
- Not stated in the notice
- Announced
- Sep 16, 2026
- First seen by ModelClock
- Oct 7, 2026
What the provider published
docs.fireworks.ai ↗ New Serverless Training model: GLM 5.3
GLM 5.3 is now available for LoRA workloads on the shared Serverless Training pool, with up to 262K context. There’s no capacity to reserve and you pay per token. Move the same loop to Dedicated Training for your most demanding workloads. See the Serverless Training guide for setup and the training model catalog for current availability.
Read from the provider's text; the quote is the provider's exact lines.
