Stability AI vs Together AI: Token Pricing, Speed & Intelligence
Full comparison of Stability AI and Together AI — live token pricing, latency, throughput, context window, strengths, weaknesses, and best use cases. Updated July 2026.
Stability AI
Open-weight image generation with Stable Diffusion
Stability AI is the creator of Stable Diffusion, the most widely used open-weight image generation model. Its API offers Stable Diffusion 3.5 Large and Stable Image Ultra for high-quality image generation.
Together AI
Open-source model hosting with competitive inference pricing
Together AI specialises in hosting open-weight models including the full Llama family, Mixtral, and DeepSeek variants. They offer live pricing via their public API and support fine-tuning workflows. A popular choice for teams that want open-source flexibility without managing their own GPU infrastructure.
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Live token pricing
Strengths & weaknesses
Stability AI
Together AI
Key differentiators
Stable Diffusion models are open-weight and can be self-hosted, making them the most flexible option for teams that need full control over their image generation pipeline.
The broadest open-weight model catalog with fine-tuning support — ideal for teams that need model customisation without self-hosting.
Frequently asked questions
Stability AI FAQs
What is Stable Diffusion?
Stable Diffusion is an open-weight text-to-image model developed by Stability AI. It can be run locally or accessed via the Stability AI API, and has spawned a large ecosystem of fine-tuned variants.
How does Stability AI compare to DALL-E 3?
DALL-E 3 generally produces more photorealistic and instruction-following images out of the box. Stable Diffusion offers more flexibility through open weights, fine-tuning, and self-hosting.
Together AI FAQs
What models does Together AI support?
Together AI hosts 100+ open-weight models including the full Llama 3.x family (8B, 70B, 405B), Mixtral, DeepSeek R1, Qwen, and many others. They also support custom fine-tuned model deployment.
How much does Together AI cost?
Llama 3.3 70B costs $0.88/1M tokens (input and output). Llama 3.1 405B is $3.50/1M tokens. Smaller models like Llama 3.2 11B Vision start at $0.18/1M tokens.
Does Together AI support fine-tuning?
Yes. Together AI offers supervised fine-tuning for Llama and other open-weight models. You can upload training data, run fine-tuning jobs, and deploy the resulting model via their inference API.
Provider resources
Stability AI — Open-weight image generation with Stable Diffusion
Stability AI is the creator of Stable Diffusion, the most widely used open-weight image generation model. Its API offers Stable Diffusion 3.5 Large and Stable Image Ultra for high-quality image generation.
Stable Diffusion models are open-weight and can be self-hosted, making them the most flexible option for teams that need full control over their image generation pipeline.
Together AI — Open-source model hosting with competitive inference pricing
Together AI specialises in hosting open-weight models including the full Llama family, Mixtral, and DeepSeek variants. They offer live pricing via their public API and support fine-tuning workflows. A popular choice for teams that want open-source flexibility without managing their own GPU infrastructure.
The broadest open-weight model catalog with fine-tuning support — ideal for teams that need model customisation without self-hosting.
Key strengths compared
Stability AI
- ▸Open-weight models available for self-hosting
- ▸Wide community and ecosystem
- ▸Competitive API pricing
Together AI
- ▸Largest selection of open-weight models
- ▸Fine-tuning support for custom model training
- ▸OpenAI-compatible API — easy migration
Provider category context
Stability AI is a frontier lab, founded in 2020. Together AI is a inference api, founded in 2022. Stability AI as a frontier lab trains and serves its own proprietary models. Together AI as an inference API provider hosts open-weight models — typically offering lower prices for equivalent capability tiers but without access to proprietary frontier models.
How to choose between them
Choose Stability AI if you need open-weight models available for self-hosting. Choose Together AI if you need largest selection of open-weight models. For high-volume production workloads, run a cost comparison using the token pricing table above with your actual prompt/completion token ratio — the cheapest provider depends heavily on your input-to-output token ratio.