Amp
Multi-model AI coding agent — free tier, no token caps, Librarian codebase search
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About Amp
Amp is an AI coding agent built by Sourcegraph, launched in May 2025 as the successor to Cody for individual developers. In December 2025, Amp spun out as an independent company led by Sourcegraph co-founder Quinn Slack (with Sourcegraph co-founder Beyang Liu also involved), retaining backing from Craft, Redpoint, and Sequoia. The spin-out let Sourcegraph focus on its enterprise code search infrastructure while Amp focused on cutting-edge coding agent technology for individual developers and teams.
Amp runs as a CLI tool and editor extension (VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Neovim), routing automatically across multiple frontier models (Claude Opus 4.7 for long-horizon tasks, Sonnet 4.6 for standard coding, GPT-5 for selected workflows) based on the task and selected mode (low/medium/high/ultra). A 200K token context window holds large services worth of code in working memory. The Librarian sub-agent searches all public GitHub and connected private repositories natively using Sourcegraph's code intelligence infrastructure. Parallel sub-agents handle complex multi-step workflows. A major architecture rebuild completed in May 2026 improved speed and extensibility.
Amp's pricing is unique: a genuinely free ad-supported tier with no hard token caps, Amp Tab autocomplete, and thread sharing. Smart Mode ($20/month as of August 2026) removes ads, opts out of data training, adds priority routing, and unlocks Oracle Mode at full reasoning depth. A $200/month tier covers higher-volume usage. By early 2026, over 40,000 development teams had adopted Amp as their primary agentic coding workflow.
Key Features
- Multi-model routing — automatically selects between Claude Opus 4.7, Sonnet 4.6, GPT-5, and other frontier models based on task complexity and mode (low/medium/high/ultra)
- Librarian sub-agent — searches all public GitHub plus connected private repos natively without leaving the session, powered by Sourcegraph's code intelligence infrastructure
- 200K token context window for holding large codebases in working memory during complex multi-file refactors and feature implementations
- Ad-supported free tier — unlimited Amp Tab autocomplete, core agent access with no hard token caps, and thread sharing at zero cost
- Available across CLI, VS Code extension, Cursor, Windsurf, JetBrains IDEs, Zed, and Neovim — no new UI to learn
- Smart Mode (paid) — zero data sharing/training, priority model routing during peak demand, and Oracle Mode at full reasoning depth
- Persistent threads and project memory — long-term task tracking with shared threads and context across sessions and team members
- Sub-agent parallel task execution — orchestrator delegates subtasks to parallel sub-agents and integrates results for complex multi-step workflows
Pros
- Ad-supported free tier is the only genuinely unlimited free tier among major coding agents — no hard token caps, no daily limits
- Multi-model routing across Claude, GPT, and other frontier models per task — not locked to a single AI provider
- The Librarian uniquely enables live search across all public GitHub and private repos without loading files manually
- Sourcegraph's code intelligence infrastructure gives Amp deeper codebase context than most terminal agents
- Available in CLI plus every major editor (VS Code, Cursor, Windsurf, JetBrains, Zed, Neovim) — true editor-agnostic flexibility
- 40,000+ teams adopted within the first months of 2026 — rapid validation of product-market fit after spin-out
Cons
- Ad-supported free tier means sponsored suggestions appear in non-code contexts like the dashboard and docs lookups
- No open-source code — closed-source commercial product unlike Cline, Goose, or OpenHands
- Smart Mode (no data sharing) requires a paid subscription — free tier users' interactions inform Amp's training pipeline
- As of August 2026 Amp subscriptions are $20 and $200/month — pricing is now similar to Claude Code and Cursor, eliminating its former pay-as-you-go-only advantage
- CLI-first design means limited visual IDE experience compared to Cursor or Windsurf — no GUI file explorer or diff viewer built in
- Spun out from Sourcegraph in December 2025 — organizational independence is new and long-term stability is still being established
Pricing
Amp offers three pricing tiers. The free ad-supported tier includes Amp Tab autocomplete, core agent access with no hard token caps, thread sharing, and the Librarian codebase sub-agent. Sponsored suggestions appear in non-code contexts (dashboard, docs lookups). No credit card required.
Smart Mode at $20/month removes ads, opts out of data sharing and model training, unlocks Oracle Mode at full reasoning depth, and provides priority model routing during peak demand. As of August 2026, Smart Mode also allows routing usage through a linked ChatGPT or X Premium+ subscription at no extra per-token cost.
A $200/month tier covers higher-volume individual usage. For teams, Amp offers workspace management with centralized billing, admin controls, shared threads and workflows, and enterprise-grade security. Enterprise pricing is custom and adds SOC 2 compliance, zero data retention, and dedicated support.
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Frequently Asked Questions
Amp is Sourcegraph's successor to Cody for individual developers. It launched in May 2025 and spun out as an independent company in December 2025, led by Sourcegraph co-founder Quinn Slack. It is an AI coding agent that runs in your terminal (CLI) and in editors including VS Code, Cursor, Windsurf, JetBrains, Zed, and Neovim. It uses multi-model routing across Claude, GPT, and other frontier models to complete agentic multi-step coding tasks.
Yes. Amp has a genuinely free tier (ad-supported) that includes Amp Tab autocomplete, access to the core agent with no hard token caps, thread sharing, and the Librarian sub-agent for codebase search. The free tier is supported by sponsored suggestions in non-code contexts. Smart Mode ($20/month) removes ads, opts out of data sharing/training, and unlocks Oracle Mode at full reasoning depth.
Amp routes automatically across multiple AI providers based on the task and the mode you select (low, medium, high, ultra). It uses Claude Opus 4.7 for long-horizon autonomous tasks, Claude Sonnet 4.6 for standard coding, and other models as appropriate. Unlike Claude Code which is Anthropic-only, Amp is not locked to a single provider.
The Librarian is Amp's sub-agent for searching remote codebases. It can search all public GitHub repositories plus any connected private repos without leaving your agent session, riding Sourcegraph's code intelligence infrastructure. This gives Amp deep cross-repository codebase awareness without requiring you to manually load files into context.
Amp went through a major architecture rebuild completed in May 2026, relaunching with improved speed and extensibility. Separately, as of August 2026, Amp introduced flat subscription plans at $20/month (Smart Mode) and $200/month alongside its existing pay-as-you-go credits, making its pricing model more predictable.
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