Serverless 2.0 is live: control reliability & speed without reserved capacity. Get Started.

Model Library
/Deep Cogito/Cogito 671B v2.1
Deep Cognito Model Logo

Cogito 671B v2.1

Ready
model path:accounts/cogito/models/cogito-671b-v2-p1

Cogito v2.1 blends standard LLM behavior with optional self-reflection for stronger reasoning. Trained across 30+ languages with a 128k context, it delivers standout performance in coding, STEM and general instruction-following.

Cogito 671B v2.1 API Features

Fine-tuning

Docs

Cogito 671B v2.1 can be customized with your data to improve responses. Fireworks uses LoRA to efficiently train and deploy your personalized model

On-demand Deployment

Docs

On-demand deployments allow you to use Cogito 671B v2.1 on dedicated GPUs with Fireworks' high-performance serving stack with high reliability and no rate limits.

Metadata

State
Ready
Created on
11/13/2025
Kind
Base model
Provider
Deep Cogito

Specification

Calibrated
No
Mixture-of-Experts
Yes
Parameters
671B

Supported Functionality

Fine-tuning
Supported
Serverless
Not supported
Context Length
163k tokens
Function Calling
Not supported
Embeddings
Not supported
Rerankers
Not supported
Support image input
Not supported