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Ai Models
4 posts on ai models on The AI Career Lab. Working guides, how-to walkthroughs, and tool comparisons for professionals applying AI to real workflows.
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GPT-5.6 Is Now Available — Plus ChatGPT Work and a 50-Year Math Proof (July 2026)
July 11 update: GPT-5.6 Sol Ultra reportedly proved the Cycle Double Cover Conjecture — a 50-year-old math problem — using 64 parallel subagents in under an hour. Also covers the July 9 broad availability of GPT-5.6 Sol, Terra, and Luna across ChatGPT and the API, the launch of ChatGPT Work, and the original government-restricted preview.
Claude Sonnet 5 Is Now the Default Model: What Professionals Need to Know
Anthropic launched Claude Sonnet 5 on June 30, 2026 — it becomes the default for Free and Pro users on July 1. Here's what changed, what the benchmarks mean, how pricing works, and whether you need to do anything.
Claude Fable 5: What It Is, Why It Was Suspended, and What Changed (2026)
July 1 update (Day 19): Fable 5 is back globally — restored after a 19-day government standoff. The US issued an export control directive June 12; Anthropic suspended both Fable 5 and Mythos 5 worldwide. Here's the full story, the truce terms, and what billing looks like now.
Your AI Model Is Being Retired: Why It Keeps Happening and What to Do (2026)
OpenAI has replaced GPT-5.5 with the GPT-5.6 family, Anthropic has retired the original Claude 4 models, and Google keeps sunsetting older Gemini versions. Here's why AI companies retire models so often, what it means for you, and the simple steps to take.