Two terminal / coding agents, side by side. Facts below link to their sources; last checked 2026-10-17.
| Gemini CLI | Devin | |
|---|---|---|
| Type | terminal / coding agent | terminal / coding agent |
| Pricing | From $20/month | From $20/month |
| Free tier | Not listed | Yes |
| Open source | Yes | No |
| Latest release | — | — |

Open-source (Apache-2.0) AI agent for the terminal: coding, research and task automation with Gemini models and MCP tools. source

Autonomous AI software engineer from Cognition: give it a task and it plans, codes, tests and opens pull requests, in the cloud or via Devin Desktop/CLI. source
Gemini CLI: Google's open-source terminal agent; free tier moved to Antigravity CLI in 2026. Devin: Cognition's autonomous AI software engineer, in the cloud or locally.
Gemini CLI: From $20/month. Devin: From $20/month (free tier available). Prices change often; confirm on the official pricing pages.