LLM APIs · A-tier

Together AI

Hosted inference for open models, plus fine-tuning. A serverless API for weights you do not want to run.

External model signals

Together AI is scored here as a product. Two public boards rank the models it serves. Token usage informs momentum. Blind votes inform capability. Their numbers stay on their sites.

OpenRouter rankings. OpenRouter ranks models by tokens processed through the OpenRouter API. OpenRouter states that a higher token total shows how much a model is used, not which model is best for a task. That usage informs momentum.
Arena (LMArena leaderboard). Arena, also called LMArena, ranks models by blind human votes. People compare anonymous answers, and only those anonymous votes count toward the public board. Arena fits the votes with a Bradley-Terry model. Those votes inform capability. Method: Arena FAQ.

Checked 14 Oct 2026. The OpenRouter rankings page showed usage through 13 Oct 2026. Rankings data is licensed CC BY 4.0. The figures move, so StackPick links the boards. Rankings data: CC BY 4.0. How these boards enter the score.

Best for

Serving and fine-tuning open weights without operating GPUs.

What it is

Together AI hosts open models behind a serverless API and also offers fine-tuning. Use it when you want Llama-class and other open weights without running GPUs. It overlaps Groq and Fireworks; the difference is catalog and training, not a chat app.

open-modelsfine-tuninginferenceLLM APIs

Score breakdown

Capability 40%82
Ease 25%76
Value 20%84
Momentum 15%78

Pricing

Freemium

Starting price: check site

Trial credits and usage-based inference are the usual shape. Confirm credits before you assume a free tier.

Dates

Released 2022 (year precision).

Added to StackPick 14 Oct 2026.

Alternatives

B-tier · 79

Fireworks

Production traffic on open models when you want serverless, not a cluster.

A-tier · 87

OpenRouter

Switching models without rewriting the client, or failing over when one lab is down.

A-tier · 85

DeepSeek API

High-volume workloads where token price matters and you can swap models.

Questions

What is Together AI best for?

Serving and fine-tuning open weights without operating GPUs.

How much does Together AI cost?

Freemium. Starting price: check site. Trial credits and usage-based inference are the usual shape. Confirm credits before you assume a free tier.

What are alternatives to Together AI?

Fireworks, OpenRouter, DeepSeek API are the alternatives we file next to it. Open a comparison when one exists.

How do model leaderboards relate to Together AI?

Together AI is scored here as a product. OpenRouter rankings (https://openrouter.ai/rankings) inform momentum from token usage. Arena (https://arena.ai) informs capability from blind votes on the models it serves. Figures stay on those sites.