---
type: "Evidence Item"
title: "Extending single-minus amplitudes to gravitons"
description: "A new preprint extends single-minus amplitudes to gravitons, with GPT-5.2 Pro helping derive and verify nonzero graviton tree amplitudes in quantum gravity."
resource: "https://openai.com/index/extending-single-minus-amplitudes-to-gravitons"
tags: ["appendix-iii", "vendor", "openai"]
timestamp: "2026-03-04"
category: "vendor"
publisher: "OpenAI"
cope_score: 76
confidence: 0.9
---

# Extending single-minus amplitudes to gravitons

# Claim

A new preprint extends single-minus amplitudes to gravitons, with GPT-5.2 Pro helping derive and verify nonzero graviton tree amplitudes in quantum gravity.

# 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: General AI capability
* Capability: Frontier model release and benchmark movement
* Cope score: 76
* Confidence: 0.9

# Related Concepts

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

# Citations

[1] [Extending single-minus amplitudes to gravitons](https://openai.com/index/extending-single-minus-amplitudes-to-gravitons)