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Durable long-context AI
lab358 makes long-context AI durable: a document's memory is computed once and reused — no repeated prefill, and the cost and latency savings land on every later call. Run it hosted on lab358 Cloud, or deploy it into your own AWS account.
Hosted on lab358 Cloud, or self-hosted in your own AWS accountSame product, same usage-based pricing — you pick where it runs.
See pricing →
HOW IT WORKS
Your document is measured once — its memory computed and filed. Every later question retrieves just the pieces it needs, shared across your whole team.
A workspace to chat over your documents, an OpenAI-compatible API to build on them, and a usage dashboard that makes the reuse — and the savings — legible.
A document is indexed once and retrieved from on demand, instead of being re-read into a prompt every time. Reach is a property of the model you pick — see its model card.
An indexed document doesn't occupy your GPU between questions — so you size the hardware for the answer, not for the size of the corpus behind it.
Run it managed on lab358 Cloud, or deploy it entirely inside your own AWS account — same product, you pick where it runs.
Index a matter's document set once, then let every reviewer question the same index instead of re-reading the files into a prompt. Self-hosted, the whole thing runs inside your own AWS account, so privileged material never leaves your perimeter.
Point it at a quarter of filings, a data room, or years of reports. Each document is indexed once and reused across every analyst and every question, rather than re-read on each one.
An OpenAI-compatible API, TypeScript and Python SDKs, and a command-line client — build on your indexed documents through the request shape your existing code already sends.
lab358 Cloud
A hosted, usage-based workspace is on the way. Leave your email and we'll reach out the moment lab358 Cloud opens — or see more.
Encrypted per workspace on lab358 Cloud, or entirely inside your own VPC when you self-host — where prompts, documents, and outputs never leave your perimeter.
Built to clear security review Read about security
Index once. Reuse forever. Hosted on lab358 Cloud, or in your own account.
Coming soon: run hosted models on lab358 Cloud, or deploy the platform in your own account via AWS Marketplace.
Investors: hello@lab358.ai