Fireworks AI vs Nebius Group

Fireworks AI — Infrastructure · Private · $17.5B valuation · 4 of 4 figures sourced  |  Nebius Group — Infrastructure · Public · $61.6B mkt cap · 4 of 4 figures sourced

Both run on DeepSeek, GLM, Kimi, Llama, Mistral.

Relationship

Fireworks Inference and Nebius Token Factory do comparable work on model hosting; both also serve buyers who need to serve a model in production; larger scale (public).

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

3 of 5 capabilitiesShared product typeLarger scale

3 of 5 capabilities — Shares model hosting, model inference and model training.

Ludbee capability tags · from the product records

Shared product type — Both ship model API.

Ludbee product records

Larger scale — Nebius Group: $61.6B market cap, against Fireworks AI's $17.5B valuation.

Ludbee scale figures · valuation, market cap or revenue estimate

Aligned comparison

FieldFireworks AINebius Group
Size$17.5B valuation$61.6B mkt cap different basis
Employees1151,543 Nebius Group has 13× more
Founded20222024 2 yrs later
StatusPrivatePublic
CategoryInfrastructureInfrastructure match
Stack layerAPI service, Model APIDeveloper tool, Infrastructure service, Model API
HeadquartersSan Mateo, USAAmsterdam, Netherlands

Capability overlap

Shared · 3

Model hostingModel inferenceModel training

Not verified for Nebius Group · 2

Agent orchestrationSpeech to text

Recorded for Fireworks AI. Nebius Group’s product records say nothing either way — a missing record is not a missing capability.

Not verified for Fireworks AI · 2

Evaluation and observabilityGPU cloud

Recorded for Nebius Group. Fireworks AI’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Fireworks AI

Model API

Fireworks AIModel API

Hosted API for serving and fine-tuning open-weight models, billed per token.

Fireworks NexusModel API

Drop-in API endpoint that routes each request across models to trade cost against quality.

Nebius Group

Model API

Nebius Token FactoryModel API

Managed inference endpoint serving open-weight models on Nebius hardware, billed per token.

No counterpart

Fireworks AI sells these in a stack layer with no product recorded for Nebius Group yet — nothing on the other side to compare them against.

API service

Fireworks InferenceAPI service

Serving for frontier open models and for a customer's own post-trained versions of them, on an inference engine tuned at each layer.

Fireworks Speech RecognitionAPI service

Real-time and batch speech-to-text on Fireworks, aimed at voice workflows that need low-latency transcription at scale.

Fireworks TrainingAPI service

Training and retraining of custom models on Fireworks, offered across several training surfaces and served on the same platform.

Nebius Group sells these in a stack layer with no product recorded for Fireworks AI yet — nothing on the other side to compare them against.

Developer tool

Managed Service for MLflowDeveloper tool

Fully managed MLflow deployment on Nebius AI Cloud for tracking experiments, metrics and artifacts across the machine-learning lifecycle without maintaining tracking-server infrastructure.

Infrastructure service

Managed SoperatorInfrastructure service

Nebius-managed Kubernetes operator that runs Slurm clusters on GPU infrastructure for fault-tolerant large-scale AI training, with topology-aware scheduling and automatic node health checks and recovery.

Nebius AI CloudInfrastructure service

Rented GPU clusters with storage and networking for training and serving models, billed by the GPU-hour.

Serverless AIInfrastructure service

Nebius AI Cloud's on-demand GPU runtime that runs containerised AI workloads as Jobs and hosts custom models behind HTTP Endpoints without provisioning or managing clusters.