--- title: "cceval vs headroom" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/amazon-science-cceval-vs-headroomlabs-ai-headroom" tools: ["amazon-science-cceval", "headroomlabs-ai-headroom"] --- # cceval vs headroom *GraphCanon updated Jul 11, 2026* ## Verdict Pick cceval when tags unique to cceval: python; pick headroom when tags unique to headroom: compression, ai, context-engineering, token-optimization. [cceval](https://crosscodeeval.github.io/) reports 181 GitHub stars, 25 forks, and 5 open issues, last pushed Aug 15, 2025. [headroom](https://headroom-docs.vercel.app/docs) has 58k stars, 4.3k forks, and 532 open issues, last pushed Jul 11, 2026. Figures are from public GitHub metadata via [cceval's repository](https://github.com/amazon-science/cceval) and [headroom's repository](https://github.com/headroomlabs-ai/headroom). | | [cceval](/tools/amazon-science-cceval.md) | [headroom](/tools/headroomlabs-ai-headroom.md) | | --- | --- | --- | | Tagline | CrossCodeEval: A Diverse and Multilingual Benchmark for Cross-File Code Completion (NeurIPS 2023) | Compress tool outputs and data to reduce tokens before reaching the LLM. | | Stars | 181 | 58,486 | | Forks | 25 | 4,319 | | Open issues | 5 | 532 | | Language | Python | Python | | Adopt for | - | Headroom is a library, proxy, and MCP server that compresses various data inputs intended for LLMs. It can significantly reduce the number of tokens required while maintaining answer integrity. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Data & Retrieval, Evaluation & Observability | Data & Retrieval, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [cceval](/tools/amazon-science-cceval.md) | [headroom](/tools/headroomlabs-ai-headroom.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Very active (96%) | | Days since push | 330d | 0d | | Open issues (now) | 5 | 532 | | Security scan | 5 critical, 7 high, 8 medium, 21 low (5 critical, 7 high, 8 medium, 21 low) | No MCP manifest | | Full report | [trust report](/tools/amazon-science-cceval/trust.md) | [trust report](/tools/headroomlabs-ai-headroom/trust.md) | ## Decision facts: headroom - **Adopt for:** Headroom is a library, proxy, and MCP server that compresses various data inputs intended for LLMs. It can significantly reduce the number of tokens required while maintaining answer integrity. ## Choose when ### Choose cceval if… - Tags unique to cceval: python. - Leaner open-issue backlog (5). ### Choose headroom if… - Tags unique to headroom: compression, ai, context-engineering, token-optimization. - headroom ships Docker support for self-hosted deployment. - When you are looking to optimize your token usage in Python-based projects where token count directly affects operational efficiency or cost. ## When NOT to use cceval - Last GitHub push was 330 days ago (slowing maintenance, Aug 15, 2025). Validate activity before betting a new project on cceval. - Data & Retrieval: Skip a heavy ingestion framework when your corpus is small and static; a script plus the embedding API is enough. - Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ## When NOT to use headroom - In scenarios where preserving all original data nuances is critical, as compression might inadvertently alter data interpretation despite maintaining answer integrity. - For projects that require high-speed processing without any delays introduced by headroom's compression algorithms. ## Common questions ### What is the difference between cceval and headroom? cceval: CrossCodeEval: A Diverse and Multilingual Benchmark for Cross-File Code Completion (NeurIPS 2023). headroom: Compress tool outputs and data to reduce tokens before reaching the LLM.. See the comparison table for live GitHub stats and shared categories. ### When should I choose cceval over headroom? Choose cceval over headroom when Tags unique to cceval: python; Leaner open-issue backlog (5). ### When should I choose headroom over cceval? Choose headroom over cceval when Tags unique to headroom: compression, ai, context-engineering, token-optimization; headroom ships Docker support for self-hosted deployment; When you are looking to optimize your token usage in Python-based projects where token count directly affects operational efficiency or cost. ### When should I avoid cceval? Last GitHub push was 330 days ago (slowing maintenance, Aug 15, 2025). Validate activity before betting a new project on cceval. Data & Retrieval: Skip a heavy ingestion framework when your corpus is small and static; a script plus the embedding API is enough. Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ### When should I avoid headroom? In scenarios where preserving all original data nuances is critical, as compression might inadvertently alter data interpretation despite maintaining answer integrity. For projects that require high-speed processing without any delays introduced by headroom's compression algorithms. ### Is cceval or headroom more popular on GitHub? headroom has more GitHub stars (58,486 vs 181). Stars measure visibility, not whether either tool fits your constraints. ### Are cceval and headroom open source? Yes - both are open-source projects on GitHub (cceval: Apache-2.0, headroom: Apache-2.0). ### Where can I find alternatives to cceval or headroom? GraphCanon lists graph-backed alternatives at [cceval alternatives](/tools/amazon-science-cceval/alternatives) and [headroom alternatives](/tools/headroomlabs-ai-headroom/alternatives) ([cceval markdown twin](/tools/amazon-science-cceval/alternatives.md), [headroom markdown twin](/tools/headroomlabs-ai-headroom/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/amazon-science-cceval-vs-headroomlabs-ai-headroom.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, cceval or headroom? cceval: Slowing. headroom: 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 cceval and headroom? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [cceval trust report](/tools/amazon-science-cceval/trust); [headroom trust report](/tools/headroomlabs-ai-headroom/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=amazon-science-cceval`](/api/graphcanon/graph?tool=amazon-science-cceval) - 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/_