{"slug": "i-built-a-token-level-debugger-for-comparing-two-llms", "title": "I built a token-level debugger for comparing two LLMs", "summary": "A developer built Tokenflame, a token-level debugger that compares outputs from two different large language models given the same prompt. The tool generates entropy heatmaps, tokenizer diffs, divergence markers, and token-by-token replay in a single HTML file with one command.", "body_md": "Same prompt, two models, different outputs. No tooling was actually showing me where they diverged.\n\nBuilt tokenflame that gives entropy heatmaps, tokenizer diffs, divergence markers, token-by-token replay. One command, one HTML file.\n\npip install tokenflame\n\n## Top comments (0)\n\nSubscribe\n\nFor further actions, you may consider blocking this person and/or [reporting abuse](/report-abuse)", "url": "https://wpnews.pro/news/i-built-a-token-level-debugger-for-comparing-two-llms", "canonical_source": "https://dev.to/bn3020/i-built-a-token-level-debugger-for-comparing-two-llms-5cn3", "published_at": "2026-05-26 00:14:28+00:00", "updated_at": "2026-05-26 01:03:46.335164+00:00", "lang": "en", "topics": ["artificial-intelligence", "machine-learning", "large-language-models", "ai-tools", "ai-products"], "entities": ["tokenflame"], "alternates": {"html": "https://wpnews.pro/news/i-built-a-token-level-debugger-for-comparing-two-llms", "markdown": "https://wpnews.pro/news/i-built-a-token-level-debugger-for-comparing-two-llms.md", "text": "https://wpnews.pro/news/i-built-a-token-level-debugger-for-comparing-two-llms.txt", "jsonld": "https://wpnews.pro/news/i-built-a-token-level-debugger-for-comparing-two-llms.jsonld"}}