Baz launches Planner with USD $9 million seed raise

Baz has launched Baz Planner and raised an additional USD $9 million in seed funding, bringing its total seed financing to USD $17 million.

The new product is designed to sit between developers and the codebase, identifying and addressing bugs and vulnerabilities at the planning stage before code is written and pushed to production.

Planner automatically routes development ideas through a series of checks to detect, diagnose, patch and validate issues. It also rewrites coding plans to remove recurring categories of problems before they appear in live software.

The launch expands Baz's offering beyond its existing AI Code Review product, which engineering teams use to apply coding standards across product, design, architecture, security and site reliability engineering. Since launching last year, Baz has signed more than 100 customers in AI, infrastructure and cybersecurity.

According to Baz, its review product ranks first on the precision-weighted Code Review Bench. The software analyses how code changes affect runtime behaviour, rather than focusing only on style or syntax, to catch silent regressions, breaking changes and security flaws.

Planning stage

Planner is intended to assess suggested changes against both current and proposed architecture before any code is saved. The tool applies a risk matrix to model-generated suggestions, blocks unsafe options and enforces defined boundaries before changes can proceed.

Baz said teams using Planner have reported up to a 65% reduction in downstream rework, measured by the number of reverted pull requests and hotfix pull requests after a merge.

Guy Eisenkot, Co-Founder and Chief Executive Officer of Baz, linked the launch to the growing use of AI-assisted software development and the need for earlier intervention in the engineering process.

"Our customers are building the backbone of the new AI stack, and they pushed us to go beyond review and intervene as early as the planning stage, where bugs and vulnerabilities are cheapest to eliminate. Baz exists because they refuse to accept that AI-generated code means blindly accepting risk," said Guy Eisenkot, Co-Founder and Chief Executive Officer of Baz.

Baz was founded by executives who previously worked on Palo Alto Networks' Cloud AppSec business. The company argues that software teams using AI-generated code need systems that make development more observable, explainable, predictable and reproducible.

Product suite

The broader Baz platform includes several agents aimed at different parts of the development workflow. A Spec Reviewer Agent checks code against product requirements, design and expected behaviour, while an Advanced Security Agent examines application code alongside infrastructure, pipelines, authentication and network boundaries.

An SRE Agent links repository changes with production telemetry to identify reliability, performance and observability risks, while a Fixer Agent applies and validates code changes in an isolated runtime. Baz said its agents also collect requirements, documentation, logs, comments and other internal knowledge in one place, and can be configured to enforce internal engineering and security policies.

The extended seed round was co-led by existing investors Battery Ventures and boldstart ventures, with new participation from AFG Partners and Disruptive VC. The fresh capital will support research into coding agents for engineering work.

Barak Schoster, Partner at Battery Ventures, said investors see Baz as addressing a growing problem as development teams adopt more automated coding tools.

"Guy and the Baz team built the code-to-cloud security playbook at Palo Alto Networks, and they are now applying that same rigor to the most pressing challenge in AI-native engineering. As development teams deploy fleets of coding agents, Baz is becoming the super harness that coordinates them, from spec-driven development and UI review to security, quality, reliability and planning, ensuring AI-generated code ships safely and at scale," said Barak Schoster, Partner at Battery Ventures.

Ed Sim, Founder and General Partner at boldstart ventures, said he viewed the new product as distinct from software that reviews code only after it has been written.

"We're thrilled to double down on Baz. Every other tool reviews code after it's written. Baz's Planner intervenes at the planning stage and kills entire classes of bugs and vulnerabilities before the code is ever authored. That's institutional engineering judgment, codified, and it's the layer the AI stack has been missing. This team ships with incredible velocity, and they're just getting started," said Ed Sim, Founder and General Partner at boldstart ventures.