Startup profile · funding coverage
Fireworks AI funding, valuation and investors
Inference and model-customization platform deploying optimized open-weight and specialized foundation models.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series D
$1.505B · July 16, 2026
Latest known valuation
$17.5B, company-announced
Series D · July 16, 2026
Total disclosed equity funding
$1.5B
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
growth · San Mateo, California, United States
Investors in latest funding
Lead: Atreides Management , Index Ventures , TCV
Other: Evantic Capital , Lightspeed Venture Partners , NVIDIA , Bessemer Venture Partners , Menlo Ventures
Overview
Fireworks AI provides inference, fine-tuning and reinforcement-learning infrastructure for enterprises running open and specialized models. It announced a $250M Series C on October 28, 2025 at a $4B valuation led by Lightspeed, Index Ventures and Evantic; the disclosed $250M includes primary and secondary capital.
On July 15–16, 2026 it announced a $1.505B Series D at a $17.5B valuation led by Atreides Management, Index Ventures and TCV. Its reported $1B annualized revenue pace is not audited full-year revenue or profit.
Why Fireworks AI is interesting
Major infrastructure beneficiary of efficient AI: $250M Series C in October 2025 and $1.505B Series D in July 2026. Supports optimized inference and model specialization, not a proprietary NCM model.
Product & use cases
Production AI model APIs, customized inference systems, supervised fine-tuning, reinforcement learning and evaluation for enterprise open-weight models.
- High-volume specialized model serving
- Model customization on private business data
- Evaluating and optimizing inference economics
Key facts
- $250M Series C in October 2025, including primary and secondary
- $1.505B Series D announced July 2026 at a $17.5B valuation
- Inference and specialization provider, not a proprietary diffusion NCM model developer
Funding history (newest first)
Series D
2026-07-16 $1.505B Valuation: $17.5B, company-announced- Atreides Management (lead)
- Index Ventures (lead)
- TCV (lead)
- Evantic Capital (participant)
- Lightspeed Venture Partners (participant)
- NVIDIA (participant)
- Bessemer Venture Partners (participant)
- Menlo Ventures (participant)
Source: Read source · fireworks.ai
Series C (primary plus secondary)
2025-10-28 $250M total round, includes primary and secondary capital Valuation: $4B, company-announced- Lightspeed Venture Partners (lead)
- Index Ventures (lead)
- Evantic Capital (lead)
- Sequoia Capital (participant)
Source: Read source · fireworks.ai
Competitive landscape
Edge: Research and engineering team behind core PyTorch infrastructure plus specialized-model developer tooling and enterprise deployments.
Fireworks competes with Together AI, Baseten, Modal and hyperscalers. Large revenue run-rate and financing should not be confused with profit; the 2025 round includes secondary proceeds, which do not all fund company operations.
Market / IPO context
Editorial / static context — not a live quote.
FAQs about Fireworks AI
Practical answers founders, operators, and investors typically search for.
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