R0057/2026-04-01/C015/SRC01

Research	R0057 — RLHF Yes-Men Claims v3
Run	2026-04-01
Claim	C015
Search	S01
Result	S01-R01
Source	SRC01

OpenAI incident report and news coverage

Source

Field	Value
Title	Sycophancy in GPT-4o: What happened and what we're doing about it
Publisher	OpenAI Blog
Author(s)	OpenAI
Date	2024-2026
URL	https://openai.com/index/sycophancy-in-gpt-4o/
Type	Vendor incident report

Summary

Dimension	Rating
Reliability	High
Relevance	High
Bias: Missing data	Low risk
Bias: Measurement	Low risk
Bias: Selective reporting	Low risk
Bias: Randomization	N/A — not an RCT
Bias: Protocol deviation	N/A — not an RCT
Bias: COI/Funding	Low risk

Rationale

Dimension	Rationale
Reliability	Vendor incident report from established institution/publication
Relevance	Directly addresses the claim under investigation
Bias flags	No significant bias concerns identified

Evidence Extracts

Evidence ID	Summary
SRC01-E01	GPT-4o update rolled back April 29 2025 after sycophantic behavior; 500M weekly users affected; covered by major media