IBM · 2026-04-28 · major
IBM Bob Hits GA — AI Coding Partner for the Full Enterprise SDLC
IBM ships Bob, an enterprise AI development agent, to general availability after an internal pilot with 80,000 IBMers, with self-reported 45% productivity gains and a router that mixes Claude, Mistral, IBM Granite, and small language models.
IBM's enterprise coding agent reaches GA with a multi-model router and a mainframe-aware Premium Package for Z.
Key specs
| Internal pilot users | 80000+ |
|---|---|
| Self reported productivity gain | 45% |
| Pro price | $20/mo |
| Ultra price | $200/mo |
What is it?
Bob is IBM's AI development partner aimed at enterprise teams. It spans the full software lifecycle — planning, coding, testing, deployment, and modernization — and ships with built-in governance, prompt-injection detection, and audit trails through a CLI called BobShell.
How does it work?
Bob routes each task to a model picked for accuracy, performance, and cost — pulling from Anthropic Claude, Mistral, IBM's Granite small-language-model family, and fine-tuned models for code reasoning, security, and next-edit prediction. "Architect mode" maps an application's structure and dependencies; "Code mode" generates and refactors. A Premium Package for Z extends Bob with mainframe-aware capabilities for COBOL and z/OS workloads.
Why does it matter?
After an internal pilot of more than 80,000 IBM employees with self-reported 45% productivity gains, Bob is one of the first big-vendor coding agents pitched as a SaaS product priced for individual developers ($20/mo Pro, $200/mo Ultra) yet anchored in enterprise governance, modernization, and mainframe work. IBM cites a Blue Pearl case where a typical 30-day Java upgrade finished in three days.
Who is it for?
Enterprise dev teams, mainframe and COBOL shops, security-conscious orgs evaluating coding agents.
Try it
30-day free trial: https://bob.ibm.com/