Jev Ultrafast browser-agent guides
Four guides on browser-use/jev-ultrafast: the 7.073-second Flights recording and its n=3 caveat, the snapshot and speculative fan-out loop, Jev as an agent decision layer, and a tutorial for the same contract.
Ecosystem
Explore the Jev Ecosystem
A directory of projects, integrations, organizations, and use cases that we have checked against a primary source. Learning guides stay in their own section.
Ecosystem stats
- 1Projects
- 1Open-source repositories
- 4Integrations
- 1Use cases
- 2Organizations
Featured projects
Popular use cases
Browser AgentsChoose the next browser operation from controls the page already listed.Model RoutingSend a request to the model that fits the job. Hub example, not a third-party product.ClassificationMap text to one label. Hub example.RAG FilteringDecide which retrieved passages to keep. Hub example.Customer SupportRoute a message to a team. Hub example.ModerationFlag content against a rubric. Hub example.Agent Tool SelectionPick the next tool from a fixed list. Hub example.
Integrations
OpenRouterAI GatewayLists ~typesafe/jev-latest and documents a Decisions API plus a TypeSafe-compatible /api/v1/systemone.Vercel AI GatewayAI GatewayModel ID typesafe-ai/jev, used with the AI SDK experimental_evaluate helper.typesafe-sdkSDKOfficial Python client. Install from PyPI and call the hosted System One API.@typesafe-ai/sdkSDKOfficial JavaScript and TypeScript client on npm, with inferred Choice, Score, and Noul answers.
Organizations
Browser UseBrowser Use publishes jev-ultrafast, an MIT-licensed browser agent that calls hosted TypeSafe Jev for operation and target choices.TypeSafeTypeSafe is the vendor that builds Jev, a System One model. Official access is the hosted API and the published SDKs.
Open source
1 published open-source repository in the project directory. The list is the open-source subset of projects, with the same profile fields.
Developer tools
Jev Cost Calculator estimates cost from the rates published on the pricing page.
Latest updates
Jev 1.13 jaggedness notes published
TypeSafe documented known failure modes for jev-1.13, including literal reading, weak numeric precision, date comparison, context rot, and generation limits.
TypeSafe exits stealth with Jev as its first public model
Third-party reporting described TypeSafe as a San Francisco lab leaving stealth with seed funding and Jev as its first System One model. Treat company-size and funding figures as third-party reports, not independently verified facts.
Current public model remains jev-1.13.0
Official models documentation lists jev-1.13.0 as the current version. Aliases jev-latest and jev-preview both pointed at that version when last verified. Input pricing was listed at $0.042 per million tokens, with output tokens free.