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Jeremy
@1jehuang
building Jcode age 21 Yc s26 hacked github top 500 monkey type
100 Following    681 Followers
There’s a good solution to this
Turns out the number of subagents you can spawn is rate limited not by the model providers but by your own system My laptops RAM was being a constraint in how many concurrent agents I can spawn, at this point I give up, I will stop this expensive trial and error and go fucking read the manual I want to orchestrate 100s of AI agents to get knowledge work done, what should I read ?
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super long context window jev solves memory
I have lived long enough to become a domain specific harness
Either you die a system of record or you live long enough to become a domain-specific harness
@1jehuang 's jcode is exceptional. ive been using it as a daily driver for a few weeks now! Been a great base for me to fork to customize but out of the box its been so good.
jcode is one of the best cli coding agents out there
My current set up as of 15 hrs ago: - ghostty as terminal - herdr as organizer - jcode as agent - sitting on anthropic model for planning and glm via baseten for data and code gen work - obsidian for docs and brain dumps overkill? Idk. peaceful and clarifying, absolutely. Fits my style of work
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people tell me spawn time doesn't matter, but codex and claude code being so slow is the only reason i had it in the readme. (this is 1x speed)
In the latest Codex CLI release, I redid the lifecycle to make `codex` startup instant. It's now ~25x faster and immediately responsive.
Underrated dev tool, I have it buy my Chinese api tokens
today we are excited to launch Agentcard (yc s26) agents can buy things for us, but in order to do so they need to be able to pay. current solutions don't work: x402 and MPP are great, but no online store supports them. Agentcard is a simple vault that companies can use to store their users' cards and share them with an agent. it works with every card, is PCI compliant, and will be natively integrated into all major agent browsers. we think we still have a lot to learn and build to unlock agentic commerce, but we are convinced that the way (today) is to use the current networks. we can't wait for the world to adapt; we need to adapt to the world. try agentcard for free today :)
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There’s never been a better time to invest in cards. Join the waitlist at for a chance to win an ’86 Fleer Jordan worth ~$10K Every referral = 10 extra entries.
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Hey 👋 I maintain @ratatui_rs 🐀 Ratatui powers the new generation of terminal coding agents... and another one just dropped! jcode is an open source Rust agent built for fast, memory-efficient parallel sessions and swarms! 🦀 #rustlang# #ratatui# #opensource# #terminal# #agents# #ai#
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Opencode might just be 7 months behind
holy shit guys opencode would be SO much better in rust
Today I'm fixing benchmarks with Jcode bench! Jcode bench is the first open and uncontaminatable benchmark. There are a few problems in the coding benchmarks of today: >Private benchmarks are hard to trust >Public benchmarks are easy to benchmaxx >Benchmark task grading can be too coarse or wrong >Benchmarks give little signal to distinguish between the frontier and mid models >Benchmarks are easy to saturate >Benchmarks don't represent the real world coding work. Jcode bench fixes these problems. The layout is like this: Given one reference implementation, optimize it as much as you can. This approach produces a high signal, continuous score over time. Because there is not a known optimal implementation for these tasks, there is no solution answer to train on. If frontier model task transcripts have been trained on, then generate new tasks to spec, and rerun. Transcripts and tasks are able to be audited to do it's open nature. When it's believed that a set of SOTA transcripts have been trained, simply generate a new set of tasks to spec and rerun. spec: results: Individual tasks:
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there is a secret sauce to being better at managing coding agents. This is a real time demo of niri
now tier list the harnesses
Rough tier list of where I'd put every major model right now
I just watched this harness comparison video. There's one result that is better than the rest
Ship simulator benchmark harness with jcode codex pi deepseek harness dsh. Huge difference among harnesses!
@TryTrustAI is building the fastest, cheapest lightweight inference by optimizing KV cache at @ycombinator. Our group of MIT grads and olympiad medalists from @GoogleDeepMind, @JaneStreetGroup, and NeurIPS/ICML publishers are setting a new standard for cost and latency efficiency.
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Using for 32hrs, @1jehuang man this is crazy, in this case if i use claude code, it would be consuming 4GB+ ram, and the harness is really good
If pg thinks you are gmi, you are gmi.
I run 20 coding agents in parallel as my everyday workflow. Today, I’m launching Jcode. It’s an open-source agent 20x more memory-efficient than Claude Code, so you can run 20x more agents at once. Try it today:
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