Fireworks AI

Fastest way to build, tune, and scale AI on open models.

This coverage is stale.

Last updated May 22, 2026 (about 5 months ago).

Profile

Fireworks AI is a cloud-based platform for AI inference and fine-tuning, purpose-built for open-source models. It provides serverless access to hundreds of models, fine-tuning capabilities, and on-demand GPU deployments without managing infrastructure. The platform supports developers and enterprises in deploying and scaling generative AI across text, image, audio, and multimodal formats.

Website

Markets

LLM Ops & Tooling

Recent published developments

capitalMay 22, 2026

Fireworks AI Posts Hiring Signals for Sales Strategy Lead and Executive Assistant Roles

$4.0B

Below validation threshold — auto-passed without scoring

Fireworks AI posted a Sales Strategy Lead role in San Mateo, CA, on or around May 21, 2026, reporting to the Director of Revenue Strategy & Analytics with responsibilities including GTM strategy, territory design, QBR preparation, and AI-native sales operations for a Series C company valued at $4 billion. The role requires 7+ years experience in revenue operations or GTM strategy, SQL proficiency, and experience with AI tools; base pay ranges from $182,000 to $243,000 plus equity. A separate Executive Assistant position for the senior leadership team opened approximately 3 days prior in San Mateo, CA, with responsibilities for calendar management, travel coordination, and confidential support; base pay ranges from $140,000 to $180,000 plus equity. Both postings emphasize Fireworks AI's focus on low-latency inference and scalable model serving as a $4B Series C startup backed by Benchmark, Sequoia, Lightspeed, Index, and Evantic.

productMay 22, 2026

Fireworks AI and Cursor Partner on Composer 2.5 RL Training and Inference

launch

Fireworks AI posted on May 21, 2026, highlighting its partnership with Cursor AI for the Composer 2.5 launch where the Cursor team ran a massive RL program with RL rollouts on Fireworks alongside production inference. Nathan Tindall from Cursor thanked the Fireworks team in the quoted May 18 post announcing the Composer 2.5 launch. The post emphasizes training custom models over prompt engineering for competitive advantage in 2027 and notes Fireworks as the platform for the high-compute reinforcement learning and inference. Cursor confirmed Kimi K2.5 as the base model accessed via Fireworks RL and inference platform under commercial authorization from Moonshot AI. Fireworks AI reported 88 likes and 20 bookmarks on the post.

productMay 22, 2026

Fireworks AI Publishes Agent Execution Tax Benchmark with Nottecore on 720 Tasks

pricing

Fireworks AI published a Notte × Fireworks AI benchmark report on May 20, 2026, detailing results from 720 browser agent tasks run across frontier models including Kimi K2.5, GLM-5, MiniMax M2.5, and Gemini 2.5 Flash. The report defines Agent Execution Tax as the ratio of wasted inference calls to productive ones and measures structured output reliability in multi-step agent loops with metrics such as retry rates, latency, token overhead, and reliability-adjusted accuracy. Kimi K2.5 recorded zero parse retries across 852 calls with 2.1s p50 latency while Gemini 2.5 Flash showed an 18.6% retry rate and 22.9% execution tax; GLM-5 achieved 57.1% task accuracy and MiniMax M2.5 delivered the lowest cost per successful task at $0.062. Nottecore and Fireworks AI conducted the benchmark to highlight execution reliability differences in production agent systems.

capitalMay 21, 2026

Fireworks AI Hires Director of Sales Enablement in San Mateo

$250M

Fireworks AI posted an opening for Director of Sales Enablement based in San Mateo, California on May 21, 2026. The role supports the company's AI inference platform serving enterprise customers. The posting appeared 9 hours ago with applications open to the first 25 candidates. Fireworks AI completed a $250 million Series C in October 2025.

Fireworks AI LLM Ops & Tooling1 source

capitalMay 21, 2026

Fireworks AI Discusses $4 Billion Valuation Deal With Lightspeed and Index

$552M

Fireworks AI entered talks for a funding round at a $4 billion valuation with Lightspeed Venture Partners and Index Ventures. The company operates as an AI cloud provider renting Nvidia chip servers for model inference. The potential deal follows prior funding that valued the startup at $552 million after its Series B round. Lightspeed and Index would lead the new round alongside existing backers including Sequoia Capital.

Fireworks AI LLM Ops & Tooling1 source

capitalMay 21, 2026

Fireworks AI Raises $250M Series C at $4B Valuation Led by Lightspeed and Index

$4.0B

Fireworks AI raised $250 million in Series C funding at a $4 billion post-money valuation on October 28, 2025. The round was co-led by Lightspeed Venture Partners, Index Ventures, and Evantic with participation from Sequoia Capital. The financing brings total capital raised to over $327 million and includes both primary and secondary components. Prior rounds include a $52 million Series B in 2024 at a $552 million valuation and a $25 million Series A in early 2024. NVIDIA, AMD, MongoDB, and Databricks participated in earlier funding.

Fireworks AI LLM Ops & Tooling1 source

productMay 21, 2026

Fireworks AI offers enterprise control and fine-tuning on open models as DeepInfra alternative

pricing