AI tool comparison
CodeBurn vs Euphony
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Developer Tools
CodeBurn
Token cost analytics and waste finder for AI coding tools
75%
Panel ship
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Community
Paid
Entry
CodeBurn is an open-source terminal dashboard that tracks and analyzes your token spend across Claude Code, OpenAI Codex, Cursor, OpenCode, and GitHub Copilot. It classifies coding sessions into 13 activity types — architecture, debugging, refactoring, code review, and more — and shows you exactly where your tokens are going. The standout feature is the optimizer: CodeBurn identifies wasteful patterns in your workflow — like repeatedly re-reading the same files, bloated context files, or MCP servers that are loaded but never used — and suggests concrete changes with estimated savings. It also tracks one-shot success rates per task type, helping you understand where AI is genuinely saving time vs. where you're fighting the tool. A macOS menu bar widget shows live token spend as you work, with a daily budget alert. Built by indie developer AgentSeal and shared as a Show HN, it picked up 80 upvotes and significant interest from developers who didn't realize how much they were spending on context re-reads alone. Open source under MIT license.
Developer Tools
Euphony
Turn Codex CLI sessions and Harmony JSON into browsable conversation timelines
50%
Panel ship
—
Community
Free
Entry
Euphony is an open-source, browser-based visualization tool from OpenAI that transforms raw Harmony JSON/JSONL chat data and Codex CLI session logs into interactive, filterable timelines. Paste JSON, upload a file, or point it at a public URL — Euphony auto-detects the format and renders a structured conversation view. The tool surfaces conversation-level and message-level metadata through a dedicated inspection panel, supports JMESPath-based filtering for querying large datasets, includes translation support, and can run entirely in the browser without any server dependency. For developers debugging Codex agent runs or analyzing large conversation datasets, it replaces manual JSON parsing. Euphony ships as a web component library so it can be embedded in other tools, and includes a FastAPI backend mode for remote loading and Harmony rendering. It's MIT licensed and available on GitHub at openai/euphony.
Reviewer scorecard
“I ran this on a week of Claude Code sessions and immediately found I was spending 30% of my tokens re-reading the same five config files. The menu bar widget is the killer feature — seeing the cost counter tick up while you work changes your behavior instantly. Instant install for anyone serious about AI coding.”
“Debugging Codex agent sessions used to mean manually reading JSON in a text editor. Euphony is what that developer experience should have always been — structured timelines, metadata inspection, and JMESPath filtering that actually works on large session files.”
“The 13 activity categories feel arbitrary and require calibration. More importantly, this is fundamentally a symptom-treating tool — the real fix is better context management built into the AI tools themselves. And if you're on a flat-rate API plan, cost tracking is largely irrelevant.”
“This is purpose-built for OpenAI's Harmony format and Codex sessions, which means it's primarily useful if you're already deep in the OpenAI ecosystem. Developers using other agent frameworks get limited value here unless they adapt the format.”
“Observability for AI token usage is an entire category about to explode. As agentic workflows scale from individual developers to teams and enterprises, understanding where tokens go becomes as important as understanding where CPU cycles go. CodeBurn is early but directionally correct.”
“Observability tooling for AI agents is a nascent but critical category. Euphony is a first step toward treating agent session logs with the same rigor we apply to application traces and logs — we'll see a whole category of tools like this emerge over the next two years.”
“Even for non-coding creative work — writing, research, brainstorming — understanding which prompting patterns are wasteful vs. effective is valuable. The one-shot success rate tracking by task type is a genuinely novel idea I haven't seen anywhere else.”
“This is deep dev tooling with a specific niche — valuable for AI engineers but not directly applicable to creative workflows. The visualization quality is clean, but most creators won't interact with raw Harmony JSON.”
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