---
type: "Evidence Item"
title: "The next evolution of the Agents SDK"
description: "OpenAI updates the Agents SDK with native sandbox execution and a model-native harness, helping developers build secure, long-running agents across files and tools."
resource: "https://openai.com/index/the-next-evolution-of-the-agents-sdk"
tags: ["appendix-iii", "vendor", "openai"]
timestamp: "2026-04-15"
category: "vendor"
publisher: "OpenAI"
cope_score: 74
confidence: 0.9
---

# The next evolution of the Agents SDK

# Claim

OpenAI updates the Agents SDK with native sandbox execution and a model-native harness, helping developers build secure, long-running agents across files and tools.

# Relevance

Appendix III, section two: vendor threshold and platform capability evidence

# Oracle Verdict

This is a lower-to-mid strength vendor signal for the capability register. It does not prove displacement on its own, but it records another platform step that can later show up as workflow automation, procurement change, or organisational dependency.

# Metadata

* Publisher: OpenAI
* Category: vendor
* Sector: Software engineering
* Capability: Agent platform and API infrastructure
* Cope score: 74
* Confidence: 0.9

# Related Concepts

* [Live evidence index](index.md)
* [Thesis](../thesis.md)

# Citations

[1] [The next evolution of the Agents SDK](https://openai.com/index/the-next-evolution-of-the-agents-sdk)