---
type: "post"
id: "langsmith-llm-gateway-now-supports-the-openai-decisions-d9f6eb"
slug: "langsmith-llm-gateway-now-supports-the-openai-decisions-d9f6eb"
title: "LangSmith LLM Gateway now supports the OpenAI Decisions API."
description: "**Thesis:** A gateway integration matters when it brings a distinct task interface under the same operational controls as ordinary model traffic."
retrieval_nugget: "**Thesis:** A gateway integration matters when it brings a distinct task interface under the same operational controls as ordinary model traffic."
published_at: "2026-10-09"
updated_at: "2026-10-09"
record_date: "2026-10-09"
date_kind: "published_at"
topics: []
source_urls: ["https://docs.langchain.com/langsmith/llm-gateway-decision-models"]
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editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]}
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---

# LangSmith LLM Gateway now supports the OpenAI Decisions API.

## Retrieval answer

**Thesis:** A gateway integration matters when it brings a distinct task interface under the same operational controls as ordinary model traffic.

**Thesis:** A gateway integration matters when it brings a distinct task interface under the same operational controls as ordinary model traffic. LangSmith’s documentation now describes routing OpenAI Decisions API requests through the LLM Gateway, rather than presenting the API only as a direct provider call.

**Observed facts:** The documented endpoint is `POST /openai/v1/decisions`, and the example uses a workspace-scoped LangSmith key plus an `OPENAI_API_KEY` provider secret. **Mechanism:** The gateway routes native Decisions API requests while applying existing access, rate-limit, and budget controls and tracing inputs, answers, and token usage to LangSmith. This allows a structured-answer API to sit inside an existing governance and observability path instead of requiring a separate integration surface.

**Why now:** Structured classification and scoring outputs are useful to agent workflows, and routing them through shared controls reduces the need to treat each API family as an operational exception. **First implication:** Teams already using LangSmith Gateway can evaluate Decisions requests within their existing access and spend-policy setup. **Evidence boundary:** The documentation establishes the route, configuration, and stated controls, but does not demonstrate latency, accuracy, rollout scope, or comparative performance. **First watch condition:** Watch for documented coverage of additional Decisions request types and concrete operational reports from deployments. This is an integration update, not evidence that a particular decision workload is more reliable or cheaper.

Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json

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