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FROM THE CREATORS OF PYTORCH

Frontier Specialized Intelligence

Surpass closed models on performance, speed, and cost when you train and run your models on Fireworks.

Fireworks processes 30T+ tokens per day

How Cursor Trained Composer on Fireworks
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NVIDIA GTC 2026, Jensen Huang

"Fireworks is the TSMC of AI Factories..."

The infrastructure layer for continuously improving specialized intelligence.

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Fireworks Products

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Inference

The highest performance inference for your specialized intelligence.

Serve frontier open models, or your own post-trained versions of them, on an engine optimized at every layer.

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Training

Find out more about our Training Agent, Managed Training, and Training API

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Customer Love

What our customers are saying

Cresta

"Fireworks' Multi-LoRA capabilities align with Cresta's strategy to deploy custom AI through fine-tuning cutting-edge base models. It helps unleash the potential of AI on private enterprise data."

Tim Shi
Tim Shi | Co-Founder at Cresta
Motif

“Using Fireworks AI on Foundry, we can run repeatable, high-volume evaluations through a single Azure endpoint, which helps our team move faster from deployment to informed model decisions with more confidence.”

Hanbin Jung | Partnership Lead at Motif
Cursor logo dark
why did Cursor rollout Composer 2 with @FireworksAI_HQ?

"...because it's way more performant than the open source engines and is what we use in production. our rl inference scales elastically and globally because of it. when we have low prod traffic we scale up RL, when we have high prod traffic, we scale down RL."

federico cassano
Federico Cassano | AI Researcher at Cursor
Vercel Dark

"Vercel’s v0 model is a composite model. The SOTA in this space changes every day, so you don’t want to tie yourself to a single model. Using a fine-tuned reinforcement learning model with Fireworks, we perform substantially better than SOTA."

Malte Ubl, CTO at Vercel
Malte Ubl | CTO at Vercel
Notion logo dark

"By partnering with Fireworks to fine-tune models, we reduced latency from about 2 seconds to 350 milliseconds, significantly improving performance and enabling us to launch AI features at scale. That improvement is a game changer for delivering reliable, enterprise-scale AI."

Sarah Sachs
Sarah Sachs | AI Lead at Notion
genspark

"Fireworks enabled us to own our AI journey, and unlock better quality in just four weeks."

Kay Zhu
Kay Zhu | CTO at Genspark
Quora

"We've had a really great experience working with Fireworks to host open source models, including SDXL, Llama, and Mistral. After migrating one of our models, we noticed a 3x speedup in response time, which made our app feel much more responsive and boosted our engagement metrics."

SPENCER CHAN
Spencer Chan | Product Lead at Quora
Sourcegraph

"Fireworks has been a fantastic partner in building AI dev tools at Sourcegraph. Their fast, reliable model inference lets us focus on fine-tuning, AI-powered code search, and deep code context, making Cody the best AI coding assistant. They are responsive and ship at an amazing pace."

Beyang Liu Testimonial
Beyang Liu | CTO at Sourcegraph
Ui Path

By running Fireworks AI on Azure Foundry, UiPath powers both Autopilot and Delegate with open models that are significantly faster and more cost-efficient for Computer Use, all while matching the quality of Claude's Sonnet 4.6. It's a step-change in how we deliver AI at scale to our customers.

Neagovici-Negoescu
Mircea Neagovici-Negoescu | SVP, Head of AI at UiPath
Cursor logo dark

“Fireworks has been an amazing partner getting our Fast Apply and Copilot++ models running performantly. They exceeded other competitors we reviewed on performance. After testing their quantized model quality for our use cases, we have found minimal degradation. Fireworks helps implement task specific speed ups and new architectures, allowing us to achieve bleeding edge performance!”

Sualeh Asif Testimonial
Sualeh Asif | CPO at Cursor
genspark

"Fireworks enabled us to own our AI journey, and unlock better quality in just four weeks. This resulted in a better user experience for our customers."

Kay Zhu
Kay Zhu | CTO at Genspark
stackblitz

Fireworks AI on Microsoft Foundry gives us the inference throughput and latency we need to power Bolt at production scale and all within the Azure ecosystem.

Dominick Elm
Dominick Elm | Founding Engineer at StackBlitz (Bolt)
rLLM

"The rLLM team is dedicated to pushing the boundaries of autonomous AI, which means our time is best spent on innovation rather than managing backend clusters. The Fireworks Training SDK lets us focus on our research instead of wrestling with infrastructure. The platform is fast, well-optimized, and just works."

rLLM
Kyle Montgomery & Sijun Tan | Core Contributors, rLLM at rLLM
Cresta

"Fireworks' Multi-LoRA capabilities align with Cresta's strategy to deploy custom AI through fine-tuning cutting-edge base models. It helps unleash the potential of AI on private enterprise data."

Tim Shi
Tim Shi | Co-Founder at Cresta
Motif

“Using Fireworks AI on Foundry, we can run repeatable, high-volume evaluations through a single Azure endpoint, which helps our team move faster from deployment to informed model decisions with more confidence.”

Hanbin Jung | Partnership Lead at Motif
Cursor logo dark
why did Cursor rollout Composer 2 with @FireworksAI_HQ?

"...because it's way more performant than the open source engines and is what we use in production. our rl inference scales elastically and globally because of it. when we have low prod traffic we scale up RL, when we have high prod traffic, we scale down RL."

federico cassano
Federico Cassano | AI Researcher at Cursor
Vercel Dark

"Vercel’s v0 model is a composite model. The SOTA in this space changes every day, so you don’t want to tie yourself to a single model. Using a fine-tuned reinforcement learning model with Fireworks, we perform substantially better than SOTA."

Malte Ubl, CTO at Vercel
Malte Ubl | CTO at Vercel
Case Study

Cursor

How Cursor built Fast Apply using the Speculative Decoding API

40%

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+100

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$10M

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Cursor

Start building today

Instantly run popular and specialized models.