Startup profile · funding coverage
Blacksmith funding, valuation and investors
CI cloud on purpose-built hardware plus [code]smith agents that diagnose and autofix failed tests — validation infra for AI-generated code.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series B
$45M · March 2026
Latest known valuation
$550M
Series B · March 2026
Total disclosed equity funding
$55M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series b · New York / San Francisco
Overview
Blacksmith runs continuous integration workloads on purpose-built infrastructure and offers [code]smith, a cloud coding agent integrated into the validation loop (diagnose/autofix CI failures, keep PRs green). The company announced a $45 million Series B led by Peak XV Partners on August 12, 2026, at a $550 million valuation; the round closed in March 2026. Y Combinator and GV participated and tripled down. Blacksmith says more than 6,000 companies run CI on its platform, naming customers including Supabase, Clerk, Ashby, and Mercury. Total funding is $58.5 million.
Why Blacksmith is interesting
Series B ($45M at $550M) led by Peak XV closed March 2026 and announced August 12 — YC and GV tripled down as CI load spiked with AI codegen.
Product & use cases
Purpose-built CI cloud plus agent tooling to validate and merge code faster as AI increases PR and test volume.
- Faster CI for teams adopting Claude Code / Cursor-class codegen
- Autofixing flaky or failing CI to unblock merges
- Scaling runner capacity without building an internal CI cloud
Key facts
- Series B: $45M at $550M led by Peak XV; YC and GV tripled down; closed Mar 2026, announced Aug 12, 2026 (company / TechCrunch)
- Total funding $58.5M; prior Series A $10M led by GV (Sep 2025); seed $3.5M (May 2025)
- 6,000+ companies on Blacksmith CI; customers include Supabase, Clerk, Ashby, Mercury (company)
- Use of proceeds: expand compute footprint (~order of magnitude); [code]smith agent + upcoming QA
Funding history (newest first)
Series B
2026-03 $45M Valuation: $550M- Peak XV Partners (lead)
- Y Combinator (participant)
- GV (participant)
Source: https://www.blacksmith.sh/blog/announcing-blacksmiths-series-b-led-by-peak-xv-partners
Series A
2025-09 $10M- GV (lead)
- Y Combinator (participant)
Investors in our directory
Funds linked from Blacksmith's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: CI positioned as AI-era infra with agent autofix in the loop, Peak XV/YC/GV syndicate, and named high-growth developer customers.
Blacksmith wins when codegen makes CI the bottleneck. Gross margin on compute is the diligence center of gravity.
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GitHub-hosted runners / Buildkite / CircleCI direct
General CI platforms; Blacksmith emphasizes purpose-built hardware and AI autofix.
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CodeRabbit adjacent
PR judgment/security layer; complementary to CI compute.
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In-house runner fleets alternative
Ops-heavy self-managed CI capacity.
Industries
Related funding articles
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FAQs about Blacksmith
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