Fleet AI, Inc.
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]
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
vendor
Jun 2026
vendor
Fleet AI, Inc.
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.