Frontier-quality coding at a fraction of the cost.
Chat, an agentic CLI, and a VS Code extension — behind a single routing brain that sends every request to the cheapest model that can nail it. Reproducibly 5× cheaper than Claude Code.
No card required · Free tier forever · Open, reproducible benchmark
One brain routes across the best models
Reproducible benchmark
Same tasks. Very different bills.
Cumulative spend across 33 real coding tasks — one harness, every leading agent CLI. Runnable from the public repo.
Running cost across 33 tasks
Lower is better · USD, cumulative
What is Klaatu?
One brain behind every request — Klaatu-o1.
Klaatu is the routing engine under KlaatAI. It reads every message, understands your code and history, then dispatches to the cheapest of 30+ models that can nail it — across five tiers. One message is one request; tool rounds, retries and failovers are always free.
The Klaatu engine
Not a wrapper. A routing brain.
Every request classified and dispatched to the right model — grounded in your code and your history.
Routing that learns you
Klaatu-o1 classifies every request and dispatches it to the right model — escalating when an answer misses and self-healing around failing providers.
Code knowledge graph
Your codebase as a live graph — symbols, callers, blast-radius. Ask "where do we validate tokens?" and get surgical context in a fraction of the tokens.
Do more for less
Cheap tiers handle the routine; frontier models fire only when the task demands it. Your dashboard shows exactly what routing saved you.
Memory that matters
Remembers your stack, decisions and preferences across sessions — ranked by salience, so relevant facts stay sharp and stale ones fade quietly.
One brain, three windows
Chat, CLI and the VS Code extension share the same graph, memory and session. Start a task in one surface, continue it in another.
Never ships unchecked
A second, independent model reviews frontier output before it reaches you. Cross-family verification, built into every request.
One brain, three windows
Wherever you build, Klaatu comes with you.
Chat, terminal or editor — the same routing brain, code graph and memory follow you across every surface.
KlaatCode CLI
The AI engineer in your terminal. Builds a semantic index of your codebase, then debugs, implements and refactors — routed to the cheapest capable model.
Explore KlaatCodeVS Code extension
The same brain inside your editor. Inline edits, agentic tasks and code-graph context — without leaving VS Code or paying per keystroke.
Get the extensionDesktop app
A native multi-agent workspace for macOS and Windows. Run a squad of agents on your projects with one shared brain, memory and code graph.
Preview the desktop appMemory + knowledge graph
AI that remembers. A graph that understands.
Most tools start from zero every session. KlaatAI layers salience-ranked memory and a live code graph under Klaatu-o1 — so every answer is grounded in who you are and what your project actually looks like.
Persistent memory
salience-rankedKlaatu extracts what matters from every conversation — your stack, style and patterns — then ranks by salience. Frequently used context stays sharp; stale details fade quietly.
Code knowledge graph
5–15× fewer tokensYour codebase indexed into a live graph — functions, imports, callers and callees. Instead of reading a dozen files, KlaatCode queries the graph and gets surgical context, plus impact analysis before every change.
Why KlaatAI
More capability. Less cost. Zero wrangling.
Ship 3× faster with zero model wrangling
Stop context-switching between ChatGPT, Claude and Gemini tabs. Klaatu-o1 selects the right tier for every request — nano for quick answers, code for generation, reason for deep analysis — so you stay in flow.
Costs less than a single frontier subscription
Smart tier routing sends ~70% of requests through the flash and nano tiers, which cost a fraction of premium models. You get the full capability spectrum for less than one ChatGPT Plus seat.
Your entire codebase, understood from the first message
Code Graph indexes imports, symbols and project structure across unlimited files. Klaatu-o1 understands your architecture before you ask — no copy-pasting context. Ask "why does the auth middleware break?" and get a precise, repo-aware answer in seconds.
Zero learning curve for teams
One interface for web chat, CLI and API. A shared team Code Graph means every engineer gets the same context, and per-seat dashboards show who used which tier and what it cost.
Enterprise-grade reliability, always on
Every tier cascades through a priority-ordered provider pool. If one provider is rate-limited, the next fires automatically — no errors surfaced to users, no manual retries needed.
Built for developers.
Loved by teams.
Start free Pricing
Pay for one. Replace three.
A single Cursor seat is $20/mo for one model in one editor. Klaatu-o1 gives you 30+ models across chat, CLI and VS Code — usually for less.
Free
Meet the brain — no credit card.
Free forever
Get started free- 30 smart requests/day
- Light model tiers (nano, flash, core)
- Code Graph (1,000 files)
- Build, Plan, Ask agents
- KlaatCode CLI + Web UI
- Session memory
FAQ
Frequently asked questions
Everything about Klaatu-o1, KlaatCode, and how the platform works.
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Stop overpaying for every keystroke.
One subscription. Chat, CLI and editor. Start on the free tier today.
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