◉CLAUDE LABJP
●MODEL — Claude Fable 5.1 and Claude Mythos 5.1 landed on September 1. They are the same underlying model; only the strength of the safeguards differs●PRICING — Per-token rates hold at $10/$50 per MTok. What changed is cache reads, cut 75% to $0.25 per MTok●COST — How much that saves depends on your workload: roughly 25% for typical use, up to about 45% for context-heavy agentic work. Worth measuring your own split before quoting a number●BENCH — Terminal-Bench-Science 0.1 climbs from 24.7% on Fable 5 to 52.6%. Anthropic also states a standard error of 3.5-4.5 points, which is worth remembering before reading small gaps as real●SAFEGUARDS — Sharper cyber safeguards cut interventions in Claude Code sessions by roughly 60% on average. Finding vulnerabilities is now allowed; developing exploits still is not●API — New API accounts created from today can no longer edit prior context while preserving Claude's thinking transcript. It is an anti-distillation measure, and existing accounts are unaffected for now●MODEL — Claude Fable 5.1 and Claude Mythos 5.1 landed on September 1. They are the same underlying model; only the strength of the safeguards differs●PRICING — Per-token rates hold at $10/$50 per MTok. What changed is cache reads, cut 75% to $0.25 per MTok●COST — How much that saves depends on your workload: roughly 25% for typical use, up to about 45% for context-heavy agentic work. Worth measuring your own split before quoting a number●BENCH — Terminal-Bench-Science 0.1 climbs from 24.7% on Fable 5 to 52.6%. Anthropic also states a standard error of 3.5-4.5 points, which is worth remembering before reading small gaps as real●SAFEGUARDS — Sharper cyber safeguards cut interventions in Claude Code sessions by roughly 60% on average. Finding vulnerabilities is now allowed; developing exploits still is not●API — New API accounts created from today can no longer edit prior context while preserving Claude's thinking transcript. It is an anti-distillation measure, and existing accounts are unaffected for now
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⬡ API & SDK/2026-06-13Advanced

Claude Vision API in Production — Implementation Patterns for Image Analysis, PDF Processing, and OCR

Implementation patterns for taking Claude's vision capabilities to production: choosing between Base64, URL, and the Files API, native PDF processing, schema-enforced extraction with Tool Use, batch cost reduction, and error recovery — all with working code.

◉ Claude AI/2026-04-09Beginner

Complete Fix Guide: Claude File Attachment and Image Recognition Failures

Solve issues where PDFs, images, or text files attached to Claude aren't loading or throw errors. This guide covers file format support, size limits, and browser settings—everything you need to fix file upload problems.

⬡ API & SDK/2026-03-26Intermediate

Build a PDF Analysis and Summarization App with Claude API — Vision plus Extended Thinking

Learn how to build a PDF analysis and summarization application using Claude API's Vision capabilities and Extended Thinking, with step-by-step Python implementation.

⬡ API & SDK/2026-03-24Intermediate

Claude Files API Guide — Upload Once, Reference Anywhere in Your API Calls

Learn how to use the Claude Files API to upload PDFs, images, and text once and reference them across calls. Includes Python and TypeScript examples, a production-grade retry helper, real token cost estimates, and hard-won operational tips.

⬡ API & SDK/2026-03-10Intermediate

Multimodal Input Guide — Working with Images and PDFs in the Claude API

How to send images and PDFs to the Claude API, when to reach for the Files API, and the cost and speed lessons you only learn by running it in production — with real measurements.