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GPT-4.5

2 mentions across all digests

GPT-4.5 is a frontier model by OpenAI in the GPT-4 family that lacks explicit reasoning training, receiving a muted reaction compared to reasoning-focused models like o3 according to analysis of RL-for-reasoning training approaches.

/// Stats
First Seen2026-03-24
Last Seen2026-03-28
Total Mentions2
Subject Mentions1
Last 7 Days0
Sources2
Peak Relevance4/5
Active Predictions0
/// Recent Stories
2026-03-27HIGH

The State of Reinforcement Learning for LLM Reasoning

Reasoning-focused RL post-training has replaced raw scale as the frontier differentiator: o3 and Claude's extended thinking vastly outpace GPT-4.5 and Llama 4's scale-only approaches.

2026-03-21HIGH

Introducing GPT-4.5

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