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mar 27, 2026 · research
a technical report on composer 2
sasha rush · 3 min read
ship code faster.
the ai coding ide that's 800% faster and lighter than the rest. write, refactor, and ship at the speed of thought.
+65k
developers building
800%
faster than cursor
+300k
downloads
about hellocode.ai
built to make you extraordinarily productive.
hellocode.ai is a from-scratch native ide that pairs a blazingly fast editor with the smartest agents in software.
we rebuilt every layer — editor, indexer, model router, agent runtime — for one goal: zero friction between thought and shipped code.
the editor
a real ide. just faster.
try it: switch files, accept the suggestion, watch the agent ship. fully keyboard-navigable.
~/hellocode/ship-faster · main
import { useState } from "react";
import { useStore } from "@/lib/store";
export default function Dashboard() {
const [tab, setTab] = useState("workspace");
const projects = useStore((s) => s.projects);
return (
<div className="grid grid-cols-12 gap-6">
<Sidebar tab={tab} onChange={setTab} />
<main className="col-span-9">
{projects.map((p) => (
<ProjectCard key={p.id} project={p} />
800% faster✦
28ms autocomplete✦
180mb footprint✦
65k developers✦
soc 2 type ii✦
100% vs code compatible✦
free forever for hobby✦
every frontier model✦
800% faster✦
28ms autocomplete✦
180mb footprint✦
65k developers✦
soc 2 type ii✦
100% vs code compatible✦
free forever for hobby✦
every frontier model✦
800% faster✦
28ms autocomplete✦
180mb footprint✦
65k developers✦
soc 2 type ii✦
100% vs code compatible✦
free forever for hobby✦
every frontier model✦
tab model
magically accurate autocomplete.
our specialized tab model predicts your next action across multiple lines with striking speed and precision. p99 under 30ms. trained on your repo, not the public internet.
supportchat.tsx
export function SupportChat() {
const [messages, setMessages] = useState<Msg[]>([]);
const [input, setInput] = useState("");
const send = async () => {
const user: Msg = { role: "user", content: input };
setMessages((m) => [...m, user]);
const reply = await stream(input);
setMessages((m) => [...m, { role: "ai", content: reply }]);
setInput("");tabaccept · 24ms
agent · composer 2build
let's build a mission control interface, similar to the expose-style window manager on macos.
thought 4s
read appmanager.tsx
searched expose patterns
drafted feature-prd.md (+68)
3 tasks
add multiplayer mode to useappstore.ts
create missioncontrolview.tsx
○ update appmanager.tsx
composer
agents turn ideas into code.
accelerate development by handing off tasks to hellocode while you focus on making decisions. plan, build, test, and demo features end to end — all without leaving the editor.
learn about agentic developmentcloud agents
works autonomously. runs in parallel.
cloud agents use their own machines to build, test, and demo features end-to-end for you to review. queue dozens of tasks. wake up to working pull requests.
hellocode.ai/agent live
this week
this month
acme research dashboardworked for 0m 00s
let's build a dashboard to make our research findings interactive.
› indexer: 12,481 symbols
› compile: ok (1.2s)
› test: 47 passed
› lint: clean
› bundle: 312 kb gz
› deploy: staging ✓
› artifact: pr-2841
› notify: slack #ship
› indexer: 12,481 symbols
› compile: ok (1.2s)
› test: 47 passed
› lint: clean
› bundle: 312 kb gz
› deploy: staging ✓
› artifact: pr-2841
› notify: slack #ship
surfaces
in every tool. at every step.
hellocode runs in your terminal, collaborates in slack, and reviews prs in github. one agent, every surface.
in your terminal
one-line install, full agent in any shell. curl https://hellocode.ai/install -fsS | bash
in slack
tag @hellocode in a channel and it ships a pr without anyone leaving the thread.
in github
code review, conflict resolution, and stack-aware pr summaries — automatically.
the new way to build software.
field notes
loved by the people who ship.
"it was night and day. adoption went from single digits to over 80%. it spread like wildfire — all the best builders were on hellocode."
diana h.
general partner, vc firm
"every one of our 40,000 engineers is now assisted by hellocode. our productivity has gone up incredibly."
j.h.
ceo, chip company
"the autonomy slider is the killer idea. tab when you want surgical edits, agent when you want to ship a whole feature."
andrej k.
ai researcher
"we cut our context-switch cost to zero. it just keeps up."
lena f.
staff engineer, northwind
"it was night and day. adoption went from single digits to over 80%. it spread like wildfire — all the best builders were on hellocode."
diana h.
general partner, vc firm
"every one of our 40,000 engineers is now assisted by hellocode. our productivity has gone up incredibly."
j.h.
ceo, chip company
"the autonomy slider is the killer idea. tab when you want surgical edits, agent when you want to ship a whole feature."
andrej k.
ai researcher
"we cut our context-switch cost to zero. it just keeps up."
lena f.
staff engineer, northwind
"it was night and day. adoption went from single digits to over 80%. it spread like wildfire — all the best builders were on hellocode."
diana h.
general partner, vc firm
"every one of our 40,000 engineers is now assisted by hellocode. our productivity has gone up incredibly."
j.h.
ceo, chip company
"the autonomy slider is the killer idea. tab when you want surgical edits, agent when you want to ship a whole feature."
andrej k.
ai researcher
"we cut our context-switch cost to zero. it just keeps up."
lena f.
staff engineer, northwind
"switched in an afternoon. the fans on my m3 max finally went quiet."
marcus o.
founder, drift labs
"the agent shipped a refactor across 41 files while i made coffee."
priya s.
principal eng., acme
"the most useful ai tool i pay for, hands down. fast, sensible shortcuts, beautifully put together."
shadcn
creator of shadcn/ui
"it's becoming fun to be a programmer again. we are at the 1% of what's possible."
greg b.
ai company president
"switched in an afternoon. the fans on my m3 max finally went quiet."
marcus o.
founder, drift labs
"the agent shipped a refactor across 41 files while i made coffee."
priya s.
principal eng., acme
"the most useful ai tool i pay for, hands down. fast, sensible shortcuts, beautifully put together."
shadcn
creator of shadcn/ui
"it's becoming fun to be a programmer again. we are at the 1% of what's possible."
greg b.
ai company president
"switched in an afternoon. the fans on my m3 max finally went quiet."
marcus o.
founder, drift labs
"the agent shipped a refactor across 41 files while i made coffee."
priya s.
principal eng., acme
"the most useful ai tool i pay for, hands down. fast, sensible shortcuts, beautifully put together."
shadcn
creator of shadcn/ui
"it's becoming fun to be a programmer again. we are at the 1% of what's possible."
greg b.
ai company president
frontier models
use the best model for every task.
choose between every cutting-edge model from openai, anthropic, gemini, xai, and our own composer. or hit auto and let us pick the cheapest model that hits your quality bar.
select model
hellocode
composer 2
tuned in-house for surgical multi-file edits.
context
1m tokens
latency
fastest
cost
lowest
speed95
quality88
efficiency96
where are these menu label colors defined?
- • grepped choose a model
- • searched how are model labels colored in the ui?
- • read contextmenu.tsx · 142–168
- • read tokens.css · 23–41
colors come from --menu-fg in tokens.css. they're applied via the getlabelstyle helper in contextmenu.tsx:153.
indexing
complete codebase understanding.
hellocode learns how your codebase works, no matter the scale or complexity. ask anything — get a cited answer with file paths and line numbers in two seconds.
learn about semantic searchenterprise
develop enduring software.
trusted by over half of the fortune 500 to accelerate development securely and at scale. saml sso, audit logs, vpc peering, on-device model routing.
explore enterprisesoc 2
type ii audited
vpc
peering & on-device
50%+
of fortune 500
interactive benchmarks
measurably faster. provably lighter.
pick a scenario or watch them auto-step. sort the table. hover any metric for the test setup.
hellocode.ai
cold start
time from clicking the app icon to a fully interactive editor on a 50k-file repo. measured on m2 pro / 16gb.0.4s
launch → interactive editor
cursor
cold start
time from clicking the app icon to a fully interactive editor on a 50k-file repo. measured on m2 pro / 16gb.3.2s
launch → interactive editor
cold start: hellocode 0.4s versus cursor 3.2s, 8.0 times faster.
measured on m2 pro / 16gb / macos 15.4. lower is better for time and memory. higher is better for × faster.
download
install hellocode in seconds.
native binaries for every major platform. no electron, no background daemons — just a fast editor.
trusted by teams at
changelog
see what's new →may 4, 2026
model controls, spend management, and usage analytics
read →
may 1, 2026
team marketplace updates
read →
apr 30, 2026
hellocode security review
read →
apr 29, 2026
build programmatic agents with the hellocode sdk
read →
recent highlights
view all posts →apr 2, 2026 · product
meet the new hellocode
michael & sualeh · 10 min read
mar 19, 2026 · research
introducing composer 2
the hellocode team · 3 min read
mar 11, 2026 · research
how we compare model quality in hellocode
naman jain · 7 min read
we're an applied research team building the future of software development.
join usget started
try hellocode now.
download for macos, windows, and linux. free to start, no credit card required.
pricing
simple pricing, built to scale with you.
start free, upgrade when you need more. no hidden fees, no per-feature paywalls.
hobby
$0free forever
everything you need to ship side projects at full speed.
- unlimited autocomplete
- 200 agent runs / mo
- 1 cloud worker
- community support
pro
$20per month
the full hellocode experience for individual developers.
- unlimited agent runs
- 10 cloud workers
- every frontier model
- priority indexer
team
$40per seat / month
for teams that ship together — shared context and review.
- shared codebase memory
- soc 2 type ii
- centralized billing
- admin controls
newsletter
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monthly notes from the team — model releases, product updates, and engineering deep dives. no spam, unsubscribe anytime.