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LiteLLM adds day-0 Jev 1.14 images, box questions, and long context on both decision routes
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LiteLLM's October 15, 2026 post adds day-0 support for Jev 1.14 images, box questions, and long context on /v1/systemone and /v1/decisions. The proxy forwards TypeSafe-Danger-Zone- headers to TypeSafe only. This desk did not run the proxy.
LiteLLM posted on September 19 that Jev is supported on the proxy, and that the team already uses it internally. The post points at a compaction write-up.
Kerry Lu’s pass-through note, dated September 20, is the listing. TypeSafe Jev lands in v1.103.0-rc. Jev answers on /v1/systemone, and LiteLLM proxies that path with logging and cost tracking. Set TYPESAFE_API_KEY on the proxy. Clients send a LiteLLM virtual key to LITELLM_PROXY_BASE_URL/typesafe. The sample is POST /typesafe/v1/systemone with state, model: jev-latest, and a choice question. The response is TypeSafe’s, unchanged. Any path under /typesafe/ is forwarded, so GET /typesafe/v1/models lists what TypeSafe lists. Spend is logged under the versioned model TypeSafe reports, typesafe/jev-1.13.0 on that page, even when the request asks for jev-latest. Price is the public $0.042 per million input tokens, no output charge.
The compaction post is the internal use. LiteLLM asks Jev, for each older completed tool exchange, whether the bot still needs that result to answer the latest user question. Default relevance_threshold is 0.2. Results below it are replaced with a one-line notice that the result was removed. Kept results stay as they were. Tool calls and their IDs stay, so the conversation still has the shape the generator expects. System and user messages are left alone. The last assistant message and any tool exchange it belongs to are protected.
The guardrail is pre_call, named typesafe, and works with Chat Completions, Anthropic Messages, and the Responses API. A weather-then-shop-hours sample in the post is the worked example: the user asks when the shop closes, the weather report is long enough to be eligible, and Jev can mark it for removal. The post says turning compaction on does not guarantee a smaller request. If Jev is down, fail_open sends the original messages through. Applied runs can show exchanges_evaluated, exchanges_dropped, chars_removed, and the Jev model id. There is no published savings table.
The earlier compaction write-up on this desk is Tran’s keep-or-drop sieve. AstroHan’s 30-task run is the one that kept the agent and the model fixed and reported task pass rates. We did not run LiteLLM’s proxy.
Kerry Lu and Mateo Wang’s day-0 post, dated October 15, 2026, adds Jev 1.14 images, box questions, and long context on POST /v1/systemone and POST /v1/decisions. Request jev-1.14.0 through the proxy. The proxy forwards any client header that starts with TypeSafe-Danger-Zone- to TypeSafe and to no other provider. On /v1/systemone, images sit in assets. On /v1/decisions, input_image parts become assets. A box question to jev-1.13.0 or jev-latest, or an image without the header, gets a 400 before the provider is called. Spend for jev-1.14.0 lands at $0.042 per million input tokens, no output charge. Images and box questions ship in the next LiteLLM release. Cost tracking for jev-1.14.0 works after a cost-map reload.
The decisions docs print a worked box example at noul 0.99 and confidence 0.94. That JSON is an illustration. This desk did not run the proxy. Jev Day’s Box page is Box. The index is Jev Day 2026.
This site's reading
Editorial notes evaluating claims against primary sources, contextualizing findings alongside related implementations, and defining technical terms.
Verify
LiteLLM's September 19 post says Jev is supported and that the team uses it internally, and points at the compaction write-up. Kerry Lu's September 20 pass-through post is the spec for the proxy: v1.103.0-rc, POST /typesafe/v1/systemone, TYPESAFE_API_KEY on the proxy, clients send a LiteLLM virtual key.
Spend is logged under the versioned model TypeSafe reports (typesafe/jev-1.13.0 today) even when the request asks for jev-latest. Any path under /typesafe/ is forwarded, including GET /typesafe/v1/models. Compaction is a pre_call guardrail named typesafe.
Default relevance_threshold 0.2. Results below that are replaced with a fixed notice; kept results stay verbatim; the last assistant message and its tool exchange are protected. fail_open is the default if Jev is unavailable.
The compaction post does not publish a token-savings table. We did not run the proxy.
Kerry Lu and Mateo Wang's post, dated October 15, 2026, Day 0 Support: TypeSafe Jev 1.14: Adds images, box questions, and long context. LiteLLM supports box from day 0 on POST /v1/systemone and POST /v1/decisions, plus TypeSafe image input and long-context mode. Request jev-1.14.0 through the proxy. The proxy forwards any client header that starts with TypeSafe-Danger-Zone- to TypeSafe deployments and to no other provider. On /v1/systemone, images sit in assets. On /v1/decisions, input_image parts become assets. A box question to jev-1.13.0 or jev-latest, or an image without the header, gets a 400 before the provider is called. With drop_params on, LiteLLM drops the question or the image. Spend for jev-1.14.0 lands at $0.042 per 1M input tokens, no output charge. Images and box questions ship in the next LiteLLM release. Cost tracking for jev-1.14.0 works on the version already running after a cost-map reload. The decisions docs print a worked example: noul 0.99, box top 0.11, bottom 0.51, left 0.49, right 0.83, confidence 0.94, 756 input tokens. That JSON is an illustration. This desk did not run the proxy.
Compare
OpenRouter, Cloudflare, Netlify, Vercel, and Venice already list Jev as a hosted model. LiteLLM is a self-hosted proxy in front of TypeSafe's own API, with logging and cost tracking, closer to how those same teams already route chat models.
Tran's fast-jev-compaction and AstroHan's 30-task filter also score tool output and keep the kept text verbatim. LiteLLM's version sits on the proxy for Chat Completions, Anthropic Messages, and the Responses API, with a 0.2 default.
AstroHan's run is the one on this desk that reports whether the agent still finished the task.
The October 15 day-0 post is Jev 1.14 images and box on the same proxy. It is not Aviz's 82 percent and not this desk's Continue IoU 0.93. The 756-token example is LiteLLM's illustration. This desk did not run the proxy.
Terms
- Pass-through
- LiteLLM's /typesafe/ prefix. The proxy forwards TypeSafe paths, including POST /v1/systemone, and returns TypeSafe's response unchanged.
- jev-compaction
- LiteLLM guardrail that asks Jev whether each older tool result still matters for the latest user question, then replaces results below relevance_threshold (default 0.2) with a short notice.
- fail_open
- LiteLLM's default when Jev is unavailable: send the original request to the generator without compaction.
- TypeSafe-Danger-Zone-
- Prefix LiteLLM forwards to TypeSafe deployments only, opened October 15, 2026. TypeSafe-Danger-Zone-Images: true turns on images and box. TypeSafe-Danger-Zone-Long-Context: true raises both caps to 262k.