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Fleet builds high-fidelity simulation environments—training gyms—that AI agent developers use to train, evaluate, and supervise frontier agents at scale.
Raised $45M across disclosed rounds.[4][5]
Series A closed April 2026, led by Sequoia.[4][5]
post-money valuation is not publicly disclosed.
Named investors include Sequoia, Bain Capital Ventures, Menlo Ventures, SV Angel.[4][5]
Fleet Fellowship · Jun 2026[3]
org_enrichment – Fleet AI, Inc. · Jun 2026[4]
Fleet builds high-fidelity simulation environments—training gyms—that AI agent developers use to train, evaluate, and supervise frontier agents at scale.
Ask for one referenceable production customer.
Not a recommendation. The first thing this ledger cannot answer.
LangSmith / LangChain · smith.langchain.com · Same buyer (AI developers), overlapping workflow of agent evaluation and tracing; LangSmith is the closest public analog for agent testing infrastructure.[4]
Braintrust · braintrustdata.com · Same budget owner (AI engineering teams), same workflow of structured agent/LLM evaluation before production deployment.[4]
Weights & Biases · wandb.ai · Overlapping buyer and spend category—AI training infrastructure and evaluation tooling—though W&B is broader and model-centric rather than agent-centric.[4]
The customer proof is company-sourced only. No independent source in this ledger confirms it.[2]
Ask for one referenceable production customer.
Not a recommendation. The first thing this ledger cannot answer.
Filled in the side panel for invited readers. This card carries sourced facts only.
Jun 2026 · paraform.com
reported
Jun 2026
vendor
Jun 2026
vendor