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Anthropic apologized, SpaceX wants to buy Cursor & hairdryer hacked Polymarket | GMP EP10
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GPT 5.5 Launch: New Architecture, Double Price, High Hallucinations
At 41:32 · chapter starts 38:10
GPT 5.5 is not a post-training update. It's a new base model with new architecture, new pretraining corpus, and new agent-oriented objectives, co-designed with Nvidia on 100,000 Blackwell GPUs. Your GPT 5.4 prompts will not work the same way. Switching models will break your workflows.
GPT 5.5 doubled the price compared to its predecessor, costing $5 per million input tokens and $30 per million output tokens.
GPT 5.5 tops the leaderboards but hallucinates 86% of the time. Claude Opus 4.7 hallucinates 52% of the time. Grok is at 17%. For a coding agent, hallucinations don't just give wrong answers — they break your actual tools. Benchmarks are the wrong metric.
GPT 5.5 has an 86% hallucination rate versus 52% for Claude Opus 4.7, making it a risky choice for coding agents where accuracy is critical.
Grok's hallucination rate of just 17% makes it the most factually reliable of the major models, even if it lags behind in raw coding ability.