--- title: "ECC vs duet-gpt" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/affaan-m-ecc-vs-kristoferlund-duet-gpt" tools: ["affaan-m-ecc", "kristoferlund-duet-gpt"] --- # ECC vs duet-gpt *GraphCanon updated Jul 12, 2026* ## Verdict Pick ECC if eCC is a performance optimization system for AI agents built to enhance skills, instincts, memory, security, and development processes; pick duet-gpt if duetGPT empowers developers through conversational support for coding and system tasks. [ECC](https://ecc.tools) reports 228k GitHub stars, 35k forks, and 93 open issues, last pushed Jul 9, 2026. [duet-gpt](https://github.com/kristoferlund/duet-gpt) has 167 stars, 13 forks, and 1 open issues, last pushed Jun 19, 2023. Figures are from public GitHub metadata via [ECC's repository](https://github.com/affaan-m/ECC) and [duet-gpt's repository](https://github.com/kristoferlund/duet-gpt). | | [ECC](/tools/affaan-m-ecc.md) | [duet-gpt](/tools/kristoferlund-duet-gpt.md) | | --- | --- | --- | | Tagline | The agent harness performance optimization system for AI agents | A conversational semi-autonomous developer assistant. | | Stars | 228,395 | 167 | | Forks | 35,037 | 13 | | Open issues | 93 | 1 | | Language | JavaScript | TypeScript | | Adopt for | ECC is a performance optimization system for AI agents built to enhance skills, instincts, memory, security, and development processes. | DuetGPT empowers developers through conversational support for coding and system tasks. | | Persona | - | - | | Runtime | - | - | | License | MIT | MIT License provides flexibility for free use and modification. | | Categories | AI Agents, Developer Tools | AI Agents, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [ECC](/tools/affaan-m-ecc.md) | [duet-gpt](/tools/kristoferlund-duet-gpt.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Dormant (18%) | | Days since push | 2d | 1117d | | Open issues (now) | 93 | 1 | | Security scan | No MCP manifest | 49 low (49 low) | | Full report | [trust report](/tools/affaan-m-ecc/trust.md) | [trust report](/tools/kristoferlund-duet-gpt/trust.md) | ## Decision facts: ECC - **Hosting:** unknown - ECC requires JavaScript environment and is open-source, licensed under MIT. Specific setup details are not provided within repository data. - **Pricing:** freemium - Being open source with an MIT license, ECC itself is free to use, but additional features or support might incur costs outside of the core project. - **Adopt for:** ECC is a performance optimization system for AI agents built to enhance skills, instincts, memory, security, and development processes. ## Decision facts: duet-gpt - **Pricing:** freemium - Free to use; however, users need their own OpenAI API keys with potential costs based on usage. - **Adopt for:** DuetGPT empowers developers through conversational support for coding and system tasks. - **License detail:** MIT License provides flexibility for free use and modification. ## Choose when ### Choose ECC if… - ECC is primarily JavaScript; duet-gpt is TypeScript. - ECC requires JavaScript environment and is open-source, licensed under MIT. Specific setup details are not provided within repository data. - Pricing: Being open source with an MIT license, ECC itself is free to use, but additional features or support might incur costs outside of the core project.. - Tags unique to ECC: ai-agents, anthropic, claude, claude-code. - When you are specifically working with AI agents like Claude Code and Codex that require advanced performance tuning across multiple dimensions such as skills and memory management. ### Choose duet-gpt if… - duet-gpt is primarily TypeScript; ECC is JavaScript. - Pricing: Free to use; however, users need their own OpenAI API keys with potential costs based on usage.. - Tags unique to duet-gpt: agent, ai, assistant, cli. - You need assistance in generating or refactoring code, where DuetGPT uses the advanced capabilities of OpenAI's GPT-4 to suggest improvements or write new functions based on your specifications. ## When NOT to use ECC - For projects focusing solely on traditional software development workflows without AI components, ECC's specialized tools are not necessary. - In scenarios where you're working with closed-source or proprietary AI systems that do not allow for the same levels of customization as open platforms like those optimized by ECC. ## When NOT to use duet-gpt - For automated task executions where high reliability is imperative. DuetGPT may generate commands that require manual oversight before execution. - In situations requiring strict control over function calls, as it relies on the OpenAI API's function calling feature, which might not fully cover specific enterprise workflows. ## Common questions ### What is the difference between ECC and duet-gpt? ECC: The agent harness performance optimization system for AI agents. duet-gpt: A conversational semi-autonomous developer assistant.. See the comparison table for live GitHub stats and shared categories. ### When should I choose ECC over duet-gpt? Choose ECC over duet-gpt when ECC is primarily JavaScript; duet-gpt is TypeScript; ECC requires JavaScript environment and is open-source, licensed under MIT. Specific setup details are not provided within repository data; Pricing: Being open source with an MIT license, ECC itself is free to use, but additional features or support might incur costs outside of the core project.; Tags unique to ECC: ai-agents, anthropic, claude, claude-code; When you are specifically working with AI agents like Claude Code and Codex that require advanced performance tuning across multiple dimensions such as skills and memory management. ### When should I choose duet-gpt over ECC? Choose duet-gpt over ECC when duet-gpt is primarily TypeScript; ECC is JavaScript; Pricing: Free to use; however, users need their own OpenAI API keys with potential costs based on usage.; Tags unique to duet-gpt: agent, ai, assistant, cli; You need assistance in generating or refactoring code, where DuetGPT uses the advanced capabilities of OpenAI's GPT-4 to suggest improvements or write new functions based on your specifications. ### When should I avoid ECC? For projects focusing solely on traditional software development workflows without AI components, ECC's specialized tools are not necessary. In scenarios where you're working with closed-source or proprietary AI systems that do not allow for the same levels of customization as open platforms like those optimized by ECC. ### When should I avoid duet-gpt? For automated task executions where high reliability is imperative. DuetGPT may generate commands that require manual oversight before execution. In situations requiring strict control over function calls, as it relies on the OpenAI API's function calling feature, which might not fully cover specific enterprise workflows. ### Is ECC or duet-gpt more popular on GitHub? ECC has more GitHub stars (228,395 vs 167). Stars measure visibility, not whether either tool fits your constraints. ### Are ECC and duet-gpt open source? Yes - both are open-source projects on GitHub (ECC: MIT, duet-gpt: MIT). ### Where can I find alternatives to ECC or duet-gpt? GraphCanon lists graph-backed alternatives at [ECC alternatives](/tools/affaan-m-ecc/alternatives) and [duet-gpt alternatives](/tools/kristoferlund-duet-gpt/alternatives) ([ECC markdown twin](/tools/affaan-m-ecc/alternatives.md), [duet-gpt markdown twin](/tools/kristoferlund-duet-gpt/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/affaan-m-ecc-vs-kristoferlund-duet-gpt.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, ECC or duet-gpt? ECC: Very active. duet-gpt: Dormant. 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 ECC and duet-gpt? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [ECC trust report](/tools/affaan-m-ecc/trust); [duet-gpt trust report](/tools/kristoferlund-duet-gpt/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=affaan-m-ecc`](/api/graphcanon/graph?tool=affaan-m-ecc) - 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/_