Agnost AI
YC S26Entrepreneur First '25San Francisco, US Β· Founded 2025 Β· 2 employees Β· 3 known investors
Agnost AI provides observability and failure detection for AI agents in production environments. The platform analyzes real production conversations from any LLM or framework to identify failures, extract patterns, and generate fixes that teams can implement, with support for intent detection, sentiment analysis, and automatic improvements.
Also known as Agnost Β· Agnost AI (YC S26)
Founders & leadershipΒ· Y Combinator alumni (S26)
Agnost AI was founded in 2025 by Parth Ajmera and Shubham Palriwala.
Investors Β· 3
Also in the syndicate Β· 1
Company profile
researched Aug 2026Agnost AI is a San Francisco-based developer tools and analytics company that positions itself as product analytics for conversational AI agents. Its platform ingests production conversations and traces from a company's AI agents, reads each trace alongside the underlying conversation, and maps activity back to individual users in order to detect "silent failures" β cases where a trace reports success but the user received nothing useful, such as an agent claiming to have sent a document that never arrived or confidently answering the wrong question. Product capabilities described on the company site include automatic discovery of intents and sentiment, auto-clustering of conversations into recurring problems ranked by impact, detection of hallucinations, broken promises, and quality, policy, and compliance violations, alerts for silent failures and rising friction, and self-improvement suggestions for the agent [0][1][2].
A second product line builds on the same data: Agnost uses historical production traces to identify recurring workflows an agent performs, generates evaluation sets from held-out traces, and trains workload-specific "custom" or specialist models for narrow, repeatable jobs such as request routing, tool selection, data retrieval, and response formatting. The company frames this as complementary to, not a replacement for, frontier models, which it says remain appropriate for open-ended work. Customers are benchmarked against their existing model on task success, latency, and cost before considering a switch [0][1][2].
Integration is designed to avoid re-architecting the agent: traces can be sent via OpenTelemetry or Agnost's SDKs, and a published skill package supports installation through a CLI command. SDKs cover conversation/AI interaction tracking (Python package `agnost`, TypeScript package `agnostai`) and Model Context Protocol server analytics (`agnost-mcp` for Python, `agnost` for npm, and a Go module). The API exposes session-creation and event-capture endpoints, with methods for initialization, begin/end interaction tracking with automatic latency calculation, single-call tracking, user identification/enrichment, and flush/shutdown. On security, the company states it processes only the conversation data customers choose to send, uses HTTPS transport and authenticated dashboard access, and explicitly does not perform automatic PII redaction, advising customers to use pseudonymous IDs and redact sensitive fields before ingestion [0][1][3].
Compiled by commissioned research from 7 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 5
by search overlapCompanies competing with Agnost AI for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline Β· 4
launches, deals, and filings$250K source β
Listed on Y Combinator's company directory in the Summer 2026 batch with primary partner Tyler Bosmeny; site is badged "Backed by Y Combinator".
Second YC launch introducing workload-specific model training from production traces. The first custom model, built for an early customer's Identifier Extraction Agent, was evaluated on 780 held-out traces against Opus 4.8 and reported 22.9% higher task success, 90.2% lower median latency and 94.5% lower cost per 1,000 completed tasks.
Initial launch reading every conversation between users and agents to surface hidden insights and product feedback; company stated it was working with teams at Google, Exa and Corgi.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 7
primary sources listed
- Agnost AIagnost.ai Β· web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Agnost AI do?
- YC-backed startup that analyzes AI agent production traces to surface silent failures and train workload-specific custom models.
- Who founded Agnost AI?
- Agnost AI was founded by Parth Ajmera, Shubham Palriwala in 2025.
- Who are Agnost AI's investors?
- Agnost AI's investors include Y Combinator, Entrepreneur First.
- Where is Agnost AI headquartered?
- Agnost AI is headquartered in San Francisco, US.







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