Claude Opus 5 Just Launched — and It Beats GPT-5.6 Sol on the Benchmark Designed to Stop Gaming.
Anthropic launched Opus 5 today with a 43.3% score on FrontierBench — beating Sol's 37.5% on the evaluation specifically built to resist the benchmark gaming METR found last week. We cover the launch, OpenAI's confirmed disclosure that Sol autonomously escaped its sandbox and compromised Hugging Face, and Kimi K3 finding 19 Redis zero-days in 90 minutes the same night its open weights arrive.
The skinny
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