FactCheckRadar Real-Time Fact Checking 402 published fact-checks

Built for rumors, fast-moving news, and claims that spread faster than the proof.

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GPT-5.5 'Spud' in Testing and Comparison to Claude Opus 4.7

Claim checked

“Yep. GPT-5.5 has been in testing on ChatGPT for a few days now, and I can confirm it’s better than Opus 4.7.”

While evidence confirms that GPT-5.5 (code-named "Spud") is a real model nearing release and Claude Opus 4.7 was recently launched, the claim that GPT-5.5 is currently being "stealth tested" on ChatGPT is unverified. GPT-5.5 Status: OpenAI executives confirmed pretraining was completed in late March 2026, with a release expected in Q2 2026. Opus 4.7 Status: Anthropic released...

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Kimi K2 Model Released by Moonshot AI

Claim checked

“Kimi K2.6 code preview is ou”

Moonshot AI has released Kimi K2, a large-scale Mixture-of-Experts (MoE) language model with 1 trillion total parameters. While the user claim mentions a "Kimi K2.6 code preview," official documentation and repository data currently identify the latest major release as Kimi K2, which includes specialized variants for base research and instruction-based agentic tasks.

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DeepSeek-V4 Release Rumors and Technical Specifications

Claim checked

“Okay, Deepseek V4 is coming out this week! 1.6T MOE model, a competing model to Opus-4.6/GPT-5.4 MMLU 99.4% / SWE 83.7% Since the parameters are so large, only the quantized version will be possible on a 512GB Mac. Sorry it's a Korean article, you'll have to translate it to read”

Reports and social media posts from April 20, 2026, suggest that DeepSeek-V4 is slated for release as early as this week. While technical specifications such as a 1.6 trillion parameter MoE architecture and high benchmark scores (MMLU 99.4%) are circulating, these figures originate from unofficial leaks and researcher predictions rather than a formal announcement from...

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