Blog
Insights, tutorials, and news about LLMs, tokens, and AI tools
GPT-5.5 Launches One Day After Opus 4.7 - OpenAI's Calculated Counter-Punch
OpenAI shipped GPT-5.5 on April 13, 2026 - exactly one day after Anthropic's Claude Opus 4.7 release. The timing isn't a coincidence. 5.5 brings a 512K default context window, materially lower API prices, and tighter JSON-mode reliability. Here's what's new, how it stacks up against Opus 4.7, and why the next 90 days are about to get bloody.
Read More
Claude Opus 4.7 Launched: Why Anthropic Just Resolved the Drama Around Pro Limits
Anthropic shipped Claude Opus 4.7 on April 11, 2026, and - in the same release - quietly walked back the controversial peak-hour throttle that had been driving Pro and Max users into open revolt for the previous three weeks. Here's what's new in 4.7, what changed for Pro/Max users, and the timeline of how the limits saga finally ended.
Read More
Claude Peak Hours 2026: Why Your Weekly Limit Drains Faster on Weekday Afternoons
Since March 27, 2026, Claude sessions drain faster during weekday peak hours (1 PM – 7 PM UTC) on Free, Pro, Max, and Team plans. Your weekly message limit is unchanged - only the drain rate during peak hours is higher. Weekends are fully unaffected.
Read MoreTokenCalculator April 2026 Update: New Models, Dark Mode Fix, X Profile & Community Features
April 2026 brings TokenCalculator's biggest update yet: 15+ new AI models, a full dark mode overhaul, an X (Twitter) profile launch, community prompt and tip submissions, and major UI improvements.
Read More
Claude API Rate Limits and Usage Limits in April 2026
A comprehensive guide to Anthropic's current Claude API rate limits in April 2026, covering Opus 4.6, Sonnet 4.6, and Haiku 4.5 - including free vs. paid tiers, how to request increases, and strategies for working within the limits.
Read More