What is Atlas and how does it differ from Amp?

Atlas is a terminal-native AI coding agent that runs in your shell, offering predictable costs with a free core and bring-your-own-model keys. Unlike Amp, which has unpredictable pay-as-you-go costs and remote Orbs, Atlas prioritizes local control, privacy, and transparent agentic workflows.

How does Atlas handle pricing compared to Amp?

Atlas operates on a free core, requiring users to bring their own model keys, ensuring transparent and predictable costs. Amp uses a pay-as-you-go model with genuinely unpredictable costs, a $5 minimum credit purchase, and a 50% enterprise surcharge on a $1,000 minimum.

Can Atlas keep my code private and local?

Yes, Atlas is terminal-native and can build its code index with local Ollama embeddings, keeping your code off third-party servers. This contrasts with Amp's Orbs, which keep threads running on remote machines.

Does Atlas allow me to choose my AI model?

Absolutely. Atlas lets you switch the active model and provider on the fly with favorites and recents. Amp, in contrast, has Sourcegraph pick the model per mode, limiting user choice.

How does Atlas ensure code changes are safe and reviewed?

Atlas drafts a plan in a read-only plan agent and asks for approval before switching to a build agent. It then computes a unified diff for every file edit and surfaces it for approval before writing, and all tool calls are permission-gated.

What is Atlas's approach to code search and understanding?

Atlas indexes code by AST declarations using tree-sitter, not blind line windows, for precise understanding. It searches code with hybrid semantic and keyword retrieval fused by reciprocal rank fusion, providing highly relevant results.

Is Atlas extensible or customizable?

Yes, Atlas is highly extensible through plugins that contribute tools and hook into agent lifecycle events. It also ships a TUI theme system with a charcoal-and-blue default theme and many presets for customization.

Atlas: The Best Terminal-Native Alternative to Amp in 2026

Atlas offers a compelling alternative to Sourcegraph's Amp in 2026 by providing a terminal-native AI coding agent with predictable costs and local code processing. Unlike Amp's pay-as-you-go model, Atlas operates on a free core, allowing developers to bring their own model keys for transparent spending, avoiding Amp's genuinely unpredictable costs.

Predictable Costs and User-Controlled Models

Unlike Amp's pay-as-you-go model, which has genuinely unpredictable costs and no user model picker, Atlas provides a free core in 2026. Developers bring their own model keys, ensuring transparent spending. This contrasts sharply with Amp's enterprise offering, which adds a 50% surcharge on a $1,000 minimum.

Atlas offers a transparent and predictable cost structure, operating on a free core where users supply their own model API keys. This approach eliminates the financial uncertainty associated with Amp's pay-as-you-go pricing, which can lead to genuinely unpredictable costs, especially with heavy agentic use. With Atlas, developers maintain full control over their spending by directly managing their model provider accounts. Furthermore, Atlas empowers users to switch the active model and provider on the fly with favorites and recents, a significant advantage over Amp, where Sourcegraph picks the model per mode, limiting user choice. Amp's enterprise pricing also includes a 50% surcharge on a $1,000 minimum, making Atlas a more cost-effective and flexible option for many development teams.

Terminal-Native Control and Local Code Privacy

While Amp relies on Orbs to keep threads running on remote machines, Atlas provides a fully terminal-native TUI experience in 2026. Atlas prioritizes local control and privacy, allowing developers to build its code index with local Ollama embeddings, keeping sensitive code off third-party servers.

Atlas is designed as a terminal-native TUI that runs directly in your shell, offering a direct and integrated development experience without leaving your familiar environment. This contrasts with Amp's reliance on Orbs, which keep an Amp thread running on a remote machine after you close your laptop lid, potentially raising concerns about data locality and control. A key privacy advantage of Atlas is its ability to build its code index with local Ollama embeddings, ensuring that your proprietary code remains on your local machine and off third-party servers. This commitment to local processing and privacy is a fundamental differentiator from solutions that might transmit code for indexing or processing elsewhere, providing developers with greater peace of mind regarding their intellectual property.

Transparent Agentic Workflow and Code Verification

Amp's Oracle invokes a separate high-reasoning model on demand, but Atlas provides a more transparent and verifiable agentic workflow in 2026. Atlas drafts a plan in a read-only plan agent and asks before switching to a build agent, ensuring every change is reviewed.

Atlas implements a highly transparent and controlled agentic workflow, designed to give developers full oversight and approval at critical stages. Atlas drafts a plan in a read-only plan agent and asks before switching to a build agent, ensuring that the proposed actions align with the developer's intent. Following this, Atlas computes a unified diff for every file edit and surfaces it for approval before writing, allowing for precise review and rollback if necessary. Furthermore, every Atlas tool call is permission-gated against allow, ask, and deny rules before it runs, adding an additional layer of security and control. This methodical approach contrasts with Amp's Oracle, which invokes a separate high-reasoning model on demand for the hard part of a task, potentially offering less granular control over the agent's actions and outputs.

Advanced Code Indexing and Retrieval

Unlike Amp's Librarian, which searches public and private GitHub repositories for cross-codebase context, Atlas employs a sophisticated local indexing strategy in 2026. Atlas indexes code by AST declarations using tree-sitter, not blind line windows, for more precise understanding.

Atlas utilizes advanced techniques for code indexing and retrieval, providing a deeper and more accurate understanding of your codebase. Atlas indexes code by AST declarations using tree-sitter, not blind line windows, which allows for a more semantic and structured understanding of your project's components. This method enables more intelligent and context-aware operations. For searching, Atlas searches code with hybrid semantic and keyword retrieval fused by reciprocal rank fusion, combining the strengths of different search methodologies to deliver highly relevant results. This contrasts with Amp's Librarian, which focuses on searching public and private GitHub repositories for cross-codebase context, while Atlas prioritizes deep, local code understanding and efficient retrieval within your immediate project.

Extensibility and Customization for Developers

While Sourcegraph picks the model per mode for Amp, limiting user choice, Atlas offers extensive extensibility and customization options in 2026. Atlas is extensible through plugins that contribute tools and hook into agent lifecycle events, providing a tailored experience.

Atlas is built with extensibility at its core, allowing developers to customize and extend its capabilities to fit their specific workflows. Atlas is extensible through plugins that contribute tools and hook into agent lifecycle events, enabling a highly personalized and powerful agent experience. This flexibility is further enhanced by Atlas connecting to Model Context Protocol servers and exposing their tools to the agent, broadening the range of available functionalities. Additionally, Atlas ships a TUI theme system with a charcoal-and-blue default theme and many presets, allowing developers to personalize their terminal interface. This level of customization and openness stands in contrast to Amp, where Sourcegraph picks the model per mode, offering less direct control over the agent's underlying models and overall behavior.

Migration notes

What changes

Install Atlas: Download the single self-contained binary for your operating system and add it to your PATH.
Configure Model Keys: Set up your preferred model provider API keys within Atlas to enable agent functionality.
Index Your Local Code: Run Atlas's indexing command to build its code index using local Ollama embeddings, keeping your code private.
Familiarize with Plan and Diff Workflow: Understand how Atlas drafts plans and presents unified diffs for approval before applying changes.
Explore Plugins and Themes: Discover available plugins to extend Atlas's capabilities and customize your TUI with various theme presets.

Frequently asked questions

What is Atlas and how does it differ from Amp?: Atlas is a terminal-native AI coding agent that runs in your shell, offering predictable costs with a free core and bring-your-own-model keys. Unlike Amp, which has unpredictable pay-as-you-go costs and remote Orbs, Atlas prioritizes local control, privacy, and transparent agentic workflows.
How does Atlas handle pricing compared to Amp?: Atlas operates on a free core, requiring users to bring their own model keys, ensuring transparent and predictable costs. Amp uses a pay-as-you-go model with genuinely unpredictable costs, a $5 minimum credit purchase, and a 50% enterprise surcharge on a $1,000 minimum.
Can Atlas keep my code private and local?: Yes, Atlas is terminal-native and can build its code index with local Ollama embeddings, keeping your code off third-party servers. This contrasts with Amp's Orbs, which keep threads running on remote machines.
Does Atlas allow me to choose my AI model?: Absolutely. Atlas lets you switch the active model and provider on the fly with favorites and recents. Amp, in contrast, has Sourcegraph pick the model per mode, limiting user choice.
How does Atlas ensure code changes are safe and reviewed?: Atlas drafts a plan in a read-only plan agent and asks for approval before switching to a build agent. It then computes a unified diff for every file edit and surfaces it for approval before writing, and all tool calls are permission-gated.
What is Atlas's approach to code search and understanding?: Atlas indexes code by AST declarations using tree-sitter, not blind line windows, for precise understanding. It searches code with hybrid semantic and keyword retrieval fused by reciprocal rank fusion, providing highly relevant results.
Is Atlas extensible or customizable?: Yes, Atlas is highly extensible through plugins that contribute tools and hook into agent lifecycle events. It also ships a TUI theme system with a charcoal-and-blue default theme and many presets for customization.

Try Atlas in your terminal

The terminal-native AI coding agent. Free core, single binary.

Install Atlas

Sources

Amp official site (ampcode.com)
Amp documentation (ampcode.com)

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