--- title: "rtk vs lean-ctx" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/rtk-ai-rtk-vs-yvgude-lean-ctx" tools: ["rtk-ai-rtk", "yvgude-lean-ctx"] --- # rtk vs lean-ctx *GraphCanon updated Aug 16, 2026* ## Verdict Pick rtk if rtk is a Rust-based CLI tool aimed at reducing LLM token consumption for common development commands; pick lean-ctx if leanCTX serves as a context intelligence layer for AI agents, providing localized control over read access and memory management while optimizing token usage for numerous MCP tools, all powered by a local Rust binary. [rtk](https://www.rtk-ai.app) reports 76k GitHub stars, 4.8k forks, and 2.0k open issues, last pushed Aug 15, 2026. [lean-ctx](https://leanctx.com) has 3.5k stars, 312 forks, and 5 open issues, last pushed Aug 4, 2026. Figures are from public GitHub metadata via [rtk's repository](https://github.com/rtk-ai/rtk) and [lean-ctx's repository](https://github.com/yvgude/lean-ctx). | | [rtk](/tools/rtk-ai-rtk.md) | [lean-ctx](/tools/yvgude-lean-ctx.md) | | --- | --- | --- | | Tagline | CLI proxy reducing LLM token consumption by 60-90% on common dev commands | Control what your AI can see by serving context with a local Rust binary. | | Stars | 76,247 | 3,486 | | Forks | 4,795 | 312 | | Open issues | 1,973 | 5 | | Language | Rust | Rust | | Adopt for | rtk is a Rust-based CLI tool aimed at reducing LLM token consumption for common development commands. | LeanCTX serves as a context intelligence layer for AI agents, providing localized control over read access and memory management while optimizing token usage for numerous MCP tools, all powered by a local Rust binary. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Developer Tools | AI Agents, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [rtk](/tools/rtk-ai-rtk.md) | [lean-ctx](/tools/yvgude-lean-ctx.md) | | --- | --- | --- | | Days since push | 1d | 0d | | Open issues (now) | 2.0k | 5 | | Stars delta | +4.9k (30d) | Unknown | | Open issues delta | +358 (30d) | Unknown | | Owner type | Organization | User | | Full report | [trust report](/tools/rtk-ai-rtk/trust.md) | [trust report](/tools/yvgude-lean-ctx/trust.md) | ## Decision facts: rtk - **Pricing:** freemium - rtk is available under the Apache-2.0 license and is free for use in open-source projects. - **Adopt for:** rtk is a Rust-based CLI tool aimed at reducing LLM token consumption for common development commands. ## Decision facts: lean-ctx - **Adopt for:** LeanCTX serves as a context intelligence layer for AI agents, providing localized control over read access and memory management while optimizing token usage for numerous MCP tools, all powered by a local Rust binary. ## Choose when ### Choose rtk if… - Pricing: rtk is available under the Apache-2.0 license and is free for use in open-source projects.. - Tags unique to rtk: agentic-coding, ai-coding, anthropic, claude-code. - - Use rtk when you want to significantly reduce the tokens consumed by your language models during typical dev tasks, potentially lowering costs by up to 90%. ### Choose lean-ctx if… - Tags unique to lean-ctx: ai-agents, context-engineering, context-intelligence, rust. - Also covers AI Agents. - When you require granular, localized oversight over what your AI can visualize, learn from, and store within its operations. ## When NOT to use rtk - - Avoid using rtk if your workflow requires extensive command customization that would conflict with the tool’s predefined optimizations. - - Do not use rtk for development tasks outside of common dev commands where significant token reductions might not impact efficiency or costs as much. For more specialized or unique commands, other L1 ## When NOT to use lean-ctx - When there is a dependence on cloud-based solutions for context intelligence, since LeanCTX operates as a local binary. - If your setup does not need context layering or token optimization. In such cases, using LeanCTX would incur overhead without providing significant benefits. ## Common questions ### What is the difference between rtk and lean-ctx? rtk: CLI proxy reducing LLM token consumption by 60-90% on common dev commands. lean-ctx: Control what your AI can see by serving context with a local Rust binary.. See the comparison table for live GitHub stats and shared categories. ### When should I choose rtk over lean-ctx? Choose rtk over lean-ctx when Pricing: rtk is available under the Apache-2.0 license and is free for use in open-source projects.; Tags unique to rtk: agentic-coding, ai-coding, anthropic, claude-code; - Use rtk when you want to significantly reduce the tokens consumed by your language models during typical dev tasks, potentially lowering costs by up to 90%. ### When should I choose lean-ctx over rtk? Choose lean-ctx over rtk when Tags unique to lean-ctx: ai-agents, context-engineering, context-intelligence, rust; Also covers AI Agents; When you require granular, localized oversight over what your AI can visualize, learn from, and store within its operations. ### When should I avoid rtk? - Avoid using rtk if your workflow requires extensive command customization that would conflict with the tool’s predefined optimizations. - Do not use rtk for development tasks outside of common dev commands where significant token reductions might not impact efficiency or costs as much. For more specialized or unique commands, other L1 ### When should I avoid lean-ctx? When there is a dependence on cloud-based solutions for context intelligence, since LeanCTX operates as a local binary. If your setup does not need context layering or token optimization. In such cases, using LeanCTX would incur overhead without providing significant benefits. ### Is rtk or lean-ctx more popular on GitHub? rtk has more GitHub stars (76,247 vs 3,486). Stars measure visibility, not whether either tool fits your constraints. ### Are rtk and lean-ctx open source? Yes - both are open-source projects on GitHub (rtk: Apache-2.0, lean-ctx: Apache-2.0). ### Where can I find alternatives to rtk or lean-ctx? GraphCanon lists graph-backed alternatives at [rtk alternatives](/tools/rtk-ai-rtk/alternatives) and [lean-ctx alternatives](/tools/yvgude-lean-ctx/alternatives) ([rtk markdown twin](/tools/rtk-ai-rtk/alternatives.md), [lean-ctx markdown twin](/tools/yvgude-lean-ctx/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/rtk-ai-rtk-vs-yvgude-lean-ctx.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, rtk or lean-ctx? rtk: Very active. lean-ctx: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for rtk and lean-ctx? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [rtk trust report](/tools/rtk-ai-rtk/trust); [lean-ctx trust report](/tools/yvgude-lean-ctx/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=rtk-ai-rtk`](/api/graphcanon/graph?tool=rtk-ai-rtk) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_