Raised $150M across disclosed rounds.[13][14]

Series A closed November 2024, led by Index Ventures.[1][2][3][4][5][6][7][16]

post-money valuation is not publicly disclosed.

Named investors include Index Ventures, Accel, GV (Google Ventures), boldstart ventures.[1][3][4][5][6][7][16]

Guy Podjarny, Founder & CEO[1][4][5][6][13][16]

Rob Cresswell, Founding Engineer[14]

GitHub Copilot · github.com/features/copilot · Same buyer (developers) and same budget (developer tooling), but Copilot is code-centric and automates existing workflows rather than replacing the code-centric paradigm.[1][4]

Cursor (Anysphere) · cursor.com · Same buyer and workflow overlap; Cursor accelerates code writing within an editor, while Tessl aims to replace code as the source of truth with specs.[1]

Poolside · poolside.ai · Same buyer and adjacent workflow; both target AI-assisted development but Tessl's spec-centric approach is a more radical paradigm shift.[1]

Magic · magic.dev · Same buyer and similar value proposition of generating code from natural language, but Tessl emphasizes ongoing maintenance and spec-driven lifecycle.[1]

Codeium · codeium.com · Same buyer and budget; Codeium is code-centric and workflow-automation focused, competing for the same developer tooling spend.[1]

Augment · augmentcode.com · Same buyer and adjacent use case; Augment focuses on code understanding and generation within existing paradigms.[1]

The customer proof is company-sourced only. No independent source in this ledger confirms it.[6][16]

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.