Amp
Amp is a CLI coding agent from Sourcegraph (sold as a separate product from the main Cody line) designed for autonomous multi-step execution across large codebases. It positions itself as a next-generation terminal harness - focused on long-horizon agentic tasks rather than single-turn completions. Amp is currently in free beta.
Overview
AI coding agent terminal tool designed for autonomous multi-step task execution across codebases, positioned as a next-generation CLI harness.
Compare Amp side-by-side with other CLI, IDE, cloud, and framework agents on pricing, model coverage, and release cadence.
Best LLMs for this agent
Sourcegraph routes Amp to Claude Opus 4.7 for long-horizon autonomous task execution where stronger planning and reasoning matter.
Claude Sonnet 4.6 is one of Amp's documented defaults for coding work that needs a frontier model without Opus-level cost.
GPT-5 is available for some Amp workflows, with Sourcegraph handling routing rather than exposing direct BYOK selection.
Pricing and Provider Comparison
Hosted agents expose plan pricing. Bring-your-own-key agents pass the main cost through the model provider route you configure.
Featured Model Specs
| Model | Lab | Released | Context | Reasoning | Openness |
|---|---|---|---|---|---|
| Claude Opus 4.7 | Anthropic | 2026-04-16 | 1m | Yes | Proprietary |
| Claude Sonnet 4.6 | Anthropic | 2026-02-17 | 1m | Yes | Proprietary |
| GPT-5 | OpenAI | 2025-08-07 | 400k | Yes | Proprietary |
Model Compatibility Matrix
| Model | Lab | Default | Access tier | Notes |
|---|---|---|---|---|
| Claude Opus 4.7 | Anthropic | Yes | Free beta | Sourcegraph-routed default for autonomous task execution |
| Claude Sonnet 4.6 | Anthropic | No | Free beta | Sourcegraph-routed default for coding workflows |
| GPT-5 | OpenAI | No | Free beta | Available for some Amp workflows |
Underlying Models
Compare to Similar Harnesses
FAQ
Which LLM does Amp use?
Sourcegraph routes Amp to frontier coding models - Claude Opus 4.7 and Claude Sonnet 4.6 are the documented defaults for autonomous task execution, with GPT-5 available for some workflows. Model routing is handled by Sourcegraph.
Is Amp the same as Sourcegraph Cody?
No. Amp is sold as a separate product from Sourcegraph Cody. Cody focuses on in-editor assist; Amp is an autonomous CLI agent for multi-step task execution.
How much does Amp cost?
Amp is currently free during its public beta. Pricing for general availability has not been announced.
Is Amp open source?
No. Amp is a closed-source commercial product from Sourcegraph.
What platforms does Amp run on?
Amp runs as a CLI - install it locally and invoke it from your terminal. There is no VS Code extension or web UI.