AI race newsroom

What changed in the AI model race.

Quick, sourced updates on model releases, leaderboard changes, and the labs competing for the lead. News reports what named sources published. Research reports explain why it matters.

Jul 14

Jul 14OpenAIEpoch AI

OpenAI releases GPT-5.5 on April 23, 2026

OpenAI released GPT-5.5 on April 23, 2026. It gives OpenAI a new multimodal, language and vision option with API access, according to Epoch AI's catalog.

· Model release

Jul 14MetaEpoch AI

Meta releases Muse Spark on April 8, 2026

Meta released Muse Spark on April 8, 2026. It gives Meta a new multimodal, language and vision option with API access, according to Epoch AI's catalog.

· Model release

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Notes about Model Gauntlet itself. They sit below the river so industry stories stay first.