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A coding harness/agent beating Claude Code itself on Sonnet
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Hi y'all. Been working on something that should've been made a long time ago imo. It compiles codebases into O(1) hashmaps that the agent queries to discover the structure of your code/answer questions/write code.It also does complete static analysis checks on any writes the agent makes.Don't take my word for it though. Here are the benchmarks: https://benzi.fly.dev/benchmark. on 2/20 tests, Claude Code (mostly Sonnet on one task) regressed or timed out. Benzi didn't because of course, it has a map it can query and not get lost in the sauce. On the other 18 it is cheaper, faster, or often both.Would love to get some early adoption and criticism!(Only available on Windows for now. soz. and also keep an eye on the benchmarking page; I think I can push it far more -- no promises, still work in progress. Haven't thoroughly tested greenfielding experience either.)(another note: VS Code extension/website is running DeepSeek V4 flash. not Sonnet. Everything mostly built with CC Sonnet tho )
HN · launched Aug 8, 2026 · 11 upvotes (top 39%) · 2 views
Niche: ai coding agents · 470 launches, 22 in the last 7 days ▼ -48% · Explore this niche →
Category and tags
- Horizontal
- Agent / copilot
- Developer
- AI-native
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 470 launches in ai coding agents →
Could you build this?
Partial While an agent runner harness can be vibe coded, building a full incremental compiler that parses entire arbitrary codebases into exact O(1) queryable symbol graphs and executes deep static analysis on agent diffs requires dedicated language tooling expertise.
What it would actually take: Requires tree-sitter or language-server protocol (LSP) AST parsers across multiple languages integrated into an in-memory graph/hash index for scope, references, and definitions. It also requires integrating language-specific static analyzers/linters into an automated validation loop. A developer needs compilers/static analysis expertise and robust handling of language edge cases.
Discussion
3 comments analyzed.
Competitors mentioned: Claude Code, DeepSeek Harness, OpenCode
Concerns raised: Benchmark score parity with DeepSeek (78% vs 78.6%), SWE-bench Verified ranking (#4 on leaderboard)
Competitors
Other products that read as similar to this one : 1107 launches clear the similarity bar, closest 8 shown.
Attention rank: #491 of 1108 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 281 days after the earliest competitor.
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- 1Code · hn · 2026-01-15 · 75 upvotes · similarity 0.54
- Cockpit for you Claude Code agents in Rust · hn · 2026-08-01 · 13 upvotes · similarity 0.52
- Sonah · ph · 2026-10-26 · 9 upvotes · similarity 0.52
- Benzi · ph · 2026-10-02 · 1 upvotes · similarity 0.52
- claude-subagent-router · github · 2026-09-29 · 8 upvotes · similarity 0.52
- Simple plugin to get Claude Code to listen to you · hn · 2026-03-13 · 18 upvotes · similarity 0.51
- Total Recall · hn · 2026-02-05 · 67 upvotes · similarity 0.50
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