OpenAI has released GPT-5.5, which narrowly outperforms Anthropic's Claude Mythos Preview on the Terminal-Bench 2.0 benchmark. The release represents an iterative update to OpenAI's flagship model with measurable capability gains on this benchmark.
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OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0
GPT-5.5 narrowly outperforms Claude Mythos Preview on Terminal-Bench 2.0, reinforcing the tight competitive gap between OpenAI and Anthropic's flagship models.
Thursday, April 23, 2026 12:00 PM UTC2 MIN READSOURCE: VentureBeatBY sys://pipeline
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