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Newest first![AI API Price Index: Cost per 1M Tokens [Sept 2026]](/_next/image?url=%2Fimages%2Fai-api-price-index-2026.jpg&w=3840&q=75)
AI API Price Index: Cost per 1M Tokens [Sept 2026]
What major AI models cost per million tokens in September 2026, and how prices moved since July. Mid-tier prices fell up to 64%. Top-tier prices held.
![Claude Fable 5.1 Migration: 3 Breaking Changes [2026]](/_next/image?url=%2Fimages%2Fclaude-fable-5-1-migration-guide-2026.jpg&w=3840&q=75)
Claude Fable 5.1 Migration: 3 Breaking Changes [2026]
Moving from Claude Fable 5 to Fable 5.1? Forced tool use now returns a 400, older models drop its thinking blocks, and edited history breaks. The fixes.
![GPT-6 Sol and Luna: Pricing, Access, Which to Use [2026]](/_next/image?url=%2Fimages%2Fgpt-6-sol-and-luna-guide-2026.jpg&w=3840&q=75)
GPT-6 Sol and Luna: Pricing, Access, Which to Use [2026]
GPT-6 Sol costs $2/$10 and Luna $0.10/$0.50 per million tokens, about half of GPT-5.6. What changed, who gets access, and when to pick each one.
A Frame That Hears Birds, a Neural Wristband and Four More AI Builds
Six AI projects released from September 14-20, checked against their original posts, demos, repositories and public tests.
6 AI Projects to Try: Ski Game, Local Model & Robot Duck
Explore six real AI projects: a 108,000-line ski game, a local iMessage model, chat-controlled AI TV, a $399 robot duck and two more builds.
Claude Certification: All 4 Anthropic Exams Explained (2026)
All 4 Claude certification exams verified from Anthropic's official guides: $99 to $175 fees, formats, domains, the partner requirement, and free prep paths.
What People Are Building With AI: Week 30, 2026
Six real builder demos this week: a Claude skill that kills AI slop, a video editor inside Claude Code, Kimi K3 ascii art, and an AI-found memory win in Next.js.
What People Are Building With GPT-5.6 Sol (2026)
Five real GPT-5.6 Sol builds: an agent that designed its own creative tool, an ex-Apple designer's Sol vs Fable iOS test, a 3-day autonomous run, and a personal signal radar.
What People Are Building With Kimi K3 (2026)
Six real Kimi K3 builds: Google Maps 3D rebuilt in two prompts, a Redis zero-day exploit, a Blender fighter jet for under a dollar, and side-by-side runs against Fable 5 and GPT-5.6.
![Kimi K3 Review: Benchmarks, Pricing, Real Screenshots [2026]](/_next/image?url=%2Fimages%2Fkimi-k3-review-2026.jpg&w=3840&q=75)
Kimi K3 Review: Benchmarks, Pricing, Real Screenshots [2026]
Kimi K3 review with real screenshots: verified benchmarks, $3/$15 pricing, the arena result, and how Moonshot's 2.8T open-weight model compares with Claude.
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Small, sharp utilities for anyone working with AI. Open one — no account required.