TierZero
TierZero runs AI production agents that investigate incidents, triage alerts, and fix CI failures from inside Slack.
Acquired TierZero
Acquired · July 2026
TierZero built AI production agents that investigated incidents, triaged alerts, answered infrastructure questions in Slack, and repaired flaky CI for teams including Brex, Discord, and Drata. Cognition acquired it in July 2026 — the first of three deals announced in a single week — to extend Devin from writing software into keeping it running. The product is still operating and selling standalone.
Acquired by Cognition.
Last known pricing: Custom pricing — quoted per team, no public tiers
Is TierZero shut down?
No — TierZero is still operating, but it no longer stands alone: it was acquired by Cognition on July 20, 2026 and continues under the acquirer's ownership. We list it in the ToolDirectory.AI graveyard's acquired-but-operating section and watch for post-acquisition changes.
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Overview
TierZero
TierZero runs AI production agents that sit inside an engineering team's existing stack and take on the work that starts after code ships. Its Incident Agent investigates alerts, reconstructs what changed, and proposes or executes remediation; an Alert Agent groups and triages noisy pages; an Internal Support Agent answers infrastructure questions in Slack using live system data; and a CI/CD Agent detects and fixes flaky tests. Underneath sits a context engine that builds a knowledge graph across code, infrastructure telemetry, and past incident conversations, so each resolved issue makes the next investigation faster.
Acquisition note (July 2026): Cognition, the company behind the Devin coding agent, acquired TierZero on 20 July 2026 — the first of three acquisitions Cognition announced inside a single week — and said it would bring TierZero's automation work into Devin, extending Devin from writing software into keeping it running. TierZero continues to operate and sell as a standalone product; whether it stays standalone once the Devin integration lands is the open question.
Production credibility: Founded by Anhang Zhu and Yun Park, who built and ran production systems at Facebook and Databricks, and backed by Accel. After a quiet launch in 2025, TierZero reports serving tens of thousands of engineers and resolving thousands of software and infrastructure issues a day. Customers named on TierZero's own site include Brex, Discord, Drata, Framer, Weight Watchers, Aerospike, ModernLoop, Speak, 11x, and Prolific, and an engineer at Netflix gives a testimonial.
Key Features
- Incident Agent for automated root-cause investigation and remediation
- Alert Agent for auto-triage, grouping, and noise reduction
- Internal Support Agent answering infrastructure questions in Slack from live system data
- CI/CD Agent that detects and repairs flaky tests
- Context engine building a knowledge graph across code, infrastructure, and conversations
- Proactive discovery that surfaces latent issues before they page anyone
Ideal Use Case
Platform and SRE teams carrying an on-call rotation they have outgrown — enough alert volume that triage is the bottleneck, and enough tribal knowledge locked in Slack threads that every new incident restarts the same archaeology. TierZero is priced by quote rather than by public tier, so it fits teams already running an observability stack worth automating on top of.
How TierZero differentiates
Most AI SRE entrants stop at explanation: they read telemetry and hand back a root-cause hypothesis. TierZero is built to act — executing remediation in the environment, closing out CI failures, and answering colleagues in Slack without a human in the loop for routine cases. The knowledge graph across code, infra, and conversation history is the durable asset, and it is why the agents improve with each incident rather than starting cold. The counterweight is trust: acting in production demands guardrails, and buyers should scope permissions carefully before handing over remediation.
FAQ
What does TierZero do? It runs AI agents for post-deployment operations — investigating incidents, triaging alerts, answering infrastructure questions in Slack, fixing flaky CI, and executing remediation inside your environment.
How much does TierZero cost? Pricing is not published; the company sells by demo and trial, so cost is quoted per team.
Who uses TierZero? Customers named on TierZero's own site include Brex, Discord, Drata, Framer, Weight Watchers, Aerospike, ModernLoop, Speak, 11x, and Prolific, with a testimonial from an engineer at Netflix.
Who owns TierZero? Cognition, the maker of the Devin coding agent, acquired TierZero in July 2026 and plans to fold its automation work into Devin. The product is still operating.
tl;dr
TierZero is an AI production-agent platform for the work after deploy: incident investigation, alert triage, Slack-native infrastructure answers, and CI repair, learning from every issue it closes. Accel-backed, used by Brex, Discord, and Drata, and Cognition-owned since July 2026.
Related
Looking for more options? Browse the Developer Tools directory or the AI Agents category, or read our AI tools for operations listicle.
Why Use TierZero
