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Ultramarine 1 Flash

Ready
model path:accounts/fireworks/models/ultramarine-1-flash-us

Ultramarine 1 Flash is a multimodal model built for knowledge work in enterprise operations, finance, law, and consulting. It’s based on GLM-5.3 Flash, with 320B total parameters (18B active) and a 1M-token context window. This serverless endpoint is hosted in the United States. Serverless may run the model at a different numerical precision than was used in training, so outputs can differ slightly from the dedicated deployments and published evaluation results.

Ultramarine 1 Flash API Features

Serverless

Docs

Ultramarine 1 Flash 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.

Available Serverless

$0.15 / $0.03 / $0.50

Run queries immediately, pay only for usage

Per 1M Tokens (input/cached input/output)

Metadata

State
Ready
Created on
27 OCT, 2026
Kind
LoRA addon
Provider
Fireworks

Specifications

Calibrated
No
Mixture-of-Experts
No

Supporting Functionality

Fine-tuning
Not Supported
Serverless
Supported
Context Length
1040k tokens
Function Calling
Not Supported
Embeddings
Not Supported
Rerankers
Not Supported
Supporting image input
Supported