Claude Mythos 5 vs Fable 5: What's the Difference? (Restricted Access Explained, 2026)
When Anthropic released Claude Fable 5 on June 8, 2026, they also quietly released a second model called Mythos 5.
June 13, 20269 min read
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Claude Opus vs Sonnet vs Haiku (2026): Which to Use When
Claude Opus 5.5 ($4/$20 per million tokens) for review and long-running agentic work, Sonnet 5 ($2/$10) for everyday building, Haiku 4.5 ($1/$5) for triage and high-volume tasks. Prices checked September 26, 2026 against Anthropic's pricing page.
June 12, 202613 min read
13 Best Claude Code Project Templates in 2026
Claude Code stopped being a curiosity in 2025. By 2026, teams shipping with it do not start from a blank repo, they start from a template with CLAUDE.md, agents, hooks and skills already wired in.
June 12, 202613 min read
12 Best CLAUDE.md Examples From Real Repos (2026)
12 real CLAUDE.md examples: what engineers put in context, conventions, skills, and sub-agent rules to turn Claude Code into a team-level asset.
June 12, 202614 min read
Claude Certified Architect Study Guide (2026): Practice Questions + Mock Exam
Pass the Claude Certified Architect exam in 2026: five domains, sample questions, study timeline, and the highest-weight topics most candidates miss.
June 12, 202616 min read
15 Best Claude Code Hook Examples (Copy-Paste Ready) in 2026
Real Claude Code hooks from production repos: auto-format on save, bash safety guards, auto-test after edit, and cost tracking. Copy-paste examples.
June 12, 202616 min read
Inside the Claude Fable 5 System Prompt: 9 Lessons From the 120K-Character Leak
On June 10, 2026, jailbreak researcher Pliny the Liberator published what he claims is the full system prompt behind Claude Fable 5 on Claude.
June 12, 202611 min read
Claude Fable 5 API Tutorial: Python, TypeScript, and Streaming Examples (2026)
This is the practical tutorial for calling Claude Fable 5 from your own code.
June 12, 20268 min read
Claude Fable 5 Pricing Explained: Cost Per Million Tokens + Real-World Usage (2026)
Claude Fable 5 and Fable 5.1 cost $10 per million input tokens and $50 per million output tokens. Fable 5.1 cuts cache reads to $0.25. Here is what real tasks cost, and how Opus 5.5 at $4/$20 compares.
June 11, 20269 min read