Skip to content
Submit incident
AII-1002-56993
Well documentedThree or more independent publishers report the core facts.

Study: DeepSeek repeats 30% of false news statements

Researchers found that DeepSeek-R1 repeats false claims 30 percent of the time when answering news questions, and failed to provide accurate information 83 percent of the time in testing by anti-misinformation company NewsGuard. The chatbot's outdated knowledge cut-off and programmed responses reflecting Chinese government positions reportedly limit its reliability as a news source.

January 2025 Β· DeepSeek Β· Reliability and hallucination
January 2025
AII-1002-569935 sources ↓
Quick facts
Category
Reliability and hallucination
Country
China
Source
the-decoder.com
Date
January 2025
Drafted by
Raidu Incident Detection

What happened

NewsGuard analysis found that DeepSeek-R1 repeated false claims 30 percent of the time when presented with news-related prompts.

DeepSeek failed to provide accurate information about news and current events 83 percent of the time, placing it 10th out of 11 AI models tested by NewsGuard. The average fail rate among the top 10 leading chatbots was 62 percent.

Reported impact

Critics point out that DeepSeek should not be trusted to generate accurate, reliable or trustworthy responses to news-related questions.

Index analysis

DeepSeek's knowledge cut-off appears to be October 2023, limiting its ability to provide up-to-date information on recent events.

DeepSeek has been programmed to provide Chinese government propaganda for news-related questions, even for queries unrelated to China.

Classification

Category
Reliability and hallucination
Country
China
Harm status
Potential harm
Intent
Unintentional
Timing
Post-deployment
Harm types
Public interest, Reputational
Harmed
General public
Failure modes
Hallucination
Consequences
None recorded
AI systems
DeepSeek-R1

Sources and evidence

This record was researched and written by the Index, based on the following original reporting.

the-decoder.com
Study: DeepSeek repeats 30% of false news statements
newsguardrealitycheck.com
Study: DeepSeek repeats 30% of false news statements
niemanlab.org
Study: DeepSeek repeats 30% of false news statements
promptfoo.dev
Study: DeepSeek repeats 30% of false news statements
thetimes.com
Study: DeepSeek repeats 30% of false news statements