Dev.to
7/10/2026

The original title is: "AI model roundup: GPT-5 launch, GPT-OSS open-weight release, and Claude Opus 4.1"
Original: GPT-5, Opus 4.1, and Duct-Tape Security: AI's Wildest Week in 2025
Short summary
A packed AI week saw GPT-5 launch in three variants, OpenAI release GPT-OSS (120B open-weight model under Apache 2.0), and Anthropic ship Claude Opus 4.1 with improved agentic coding. A 24-year-old AI researcher reportedly landed a $250M compensation package, highlighting extreme talent competition. GPT-OSS nearly matches o4-mini on reasoning while fitting on a single 80GB GPU.
- •GPT-5 launched in Pro, Mini, and Nano variants; reaction was muted due to simultaneous releases from Anthropic and others
- •OpenAI released GPT-OSS-120B under Apache 2.0—near o4-mini reasoning parity, runs on single 80GB GPU
- •Claude Opus 4.1 shipped with noticeable improvements in agentic task completion and multi-step operations
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