Fireworks AI vs Together AI

Fireworks AI — Infrastructure · Private · $17.5B valuation · 4 of 4 figures sourced  |  Together AI — Infrastructure · Private · $8.3B valuation · 4 of 4 figures sourced

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

Relationship

Fireworks Training and Together Fine-Tuning do comparable work on model training; both also serve buyers who need to train or fine-tune a model; smaller scale (private).

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 typeSmaller 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 API service and model API.

Ludbee product records

Smaller scale — Together AI: $8.3B valuation, against Fireworks AI's $17.5B valuation.

Ludbee scale figures · valuation, market cap or revenue estimate

Aligned comparison

FieldFireworks AITogether AI
Valuation$17.5B$8.3B Together AI has 2.1× smaller
Employees115350 Together AI has 3.0× more
Founded20222022 match
StatusPrivatePrivate match
CategoryInfrastructureInfrastructure match
Stack layerAPI service, Model APIAPI service, Developer tool, Infrastructure service, Model API
HeadquartersSan Mateo, USASan Francisco, USA

Capability overlap

Shared · 3

Model hostingModel inferenceModel training

Not verified for Together AI · 2

Agent orchestrationSpeech to text

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

Not verified for Fireworks AI · 1

GPU cloud

Recorded for Together AI. 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

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.

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.

Together AI

API service

Together Batch InferenceAPI service

Asynchronous bulk inference for workloads that do not need a real-time response, priced below Together's serverless rate.

Together Fine-TuningAPI service

A managed service for fine-tuning open-source models on a customer's own data and serving the result on Together's infrastructure.

Model API

Together InferenceModel API

Hosted API serving open-weight text, image and audio models, billed per token.

No counterpart

Together AI 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

Together Custom TrainingDeveloper tool

Custom model training service covering supervised fine-tuning and direct preference optimization, billed per token.

Infrastructure service

Together Dedicated Container InferenceInfrastructure service

Dedicated, reserved GPU containers for model inference with guaranteed performance, billed per GPU-hour.

Together GPU ClustersInfrastructure service

Reserved NVIDIA GPU clusters for training and large-scale inference.