Blitzy

Autonomous software development platform (not a co-pilot — no IDE). Boston-based. You provide a detailed prompt; the platform's internal agentic architecture autonomously generates code changes against your real repo + CI/CD pipeline.

Production data point (Autonomous Software Development with Blitzy (CXOTalk))

• ~1,000-developer pilot at GNP (Mexico's largest insurer)
• 5–10× engineering velocity
• 80–95% of work autonomous, depending on use case
• ~100% on Java 8 → Java 21 migration
• ~80% on Angular frontend modernization
• IDE co-pilots used for the polish 20%

How to use it

• Detailed prompt = required input (functional spec + technical guidelines + security guidelines + test requirements all in the prompt)
• Connects to GitLab/etc + CI/CD
• Best fit: bounded modernization tasks (lang upgrades, doc gen, test gen, vuln remediation) — see Bounded vs Unbounded Tasks

How it differs from co-pilots

	Co-pilot (IDE)	Blitzy
Surface	Inside IDE	Standalone platform
Granularity	Line/chunk	Whole-feature
Driver	Developer	Prompt
Best for	Polish, exploration	Bounded heavy lifting

Sources

• Autonomous Software Development with Blitzy (CXOTalk)