Anthropic
Anthropic articles cover Claude model releases and AI development. Content includes Sonnet, Opus, and Fable model versions, capabilities.
The Anthropic section follows the release history of this AI research company, focused on successive generations of large language models and the capabilities each version introduces. Coverage explains how model families are typically organized by size and purpose, from lightweight variants to higher-capacity flagship releases.
Articles trace how announced capabilities translate into practical use, covering reasoning quality, coding assistance, and multimodal features as they appear across release cycles. Comparisons between generations highlight what changed and why it matters for developers and business users.
The collection suits readers who want a running record of this company's model development without needing to follow every technical announcement individually, offering context on what each release changed in practice.
Items
- Article
Sonnet 5
Anthropic's new default Claude model: $2/$10 per million tokens through Aug 31, 2026, then $3/$15. Agentic, close to Opus 4.8 in capability.
- Article
It's not a yippy DAY to Keep Using Fable 5 for Free
Fable 5 returned July 1 with a stronger safety filter. Free inclusion in Pro, Max, and Team plans ends today; usage credits take over tomorrow.
- Article
Fable 5's Free Window Closes Today: What $100 Buys You
Fable 5 is back, not banned for good. Free inclusion ends July 7; from July 8, usage credits price it at $10/$50 per million tokens.
- ArticleVibey
Claude Sonnet 5 Is the New Default, Priced Below Opus 4.8
Claude Sonnet 5 launched June 30, 2026 as Anthropic's new default model, priced at 40 to 60 percent of the Opus 4.8 rate depending on the date.
- Article
Fable 5
Everything on Claude Fable 5 in one place: the explainer, benchmarks, the Mythos story, pricing and access, guardrails, and developer guides.
- Article
Introducing Fable 5: The Official Launch Video
Anthropic's own launch film for Fable 5, in under two minutes: the first Mythos-class release presented in the company's words and images.
- Article
Fable 5 Launch
June 9, 2026: Anthropic releases Claude Fable 5, the first publicly available Mythos-class model, alongside restricted sibling Mythos 5.
- Article
Anthropic
The AI safety company behind the Claude model family, Project Glasswing, and the Mythos-class tier. Filed confidentially for an IPO in June 2026.
- Article
Fable 5
Anthropic's first Mythos-class model as a product: $10 per million input tokens, $50 output, 1M context. The premium tier for long-horizon work.
- ArticleNews
Fable 5 and AI Agents: What Days-Long Autonomy Means
Days-long autonomous runs, sub-agent delegation, persistent memory: what Fable 5 changes for agent builders, and where rivals stand today.
- ArticleVibey
Fable 5 for Developers: API Setup, Tools, Migration
Model IDs, the 1M context window, refusal handling, fallbacks, and where Fable 5 runs today, from Copilot to Bedrock. A working setup guide.
- ArticleNews
What Claude Fable 5 Refuses to Do, and Why It Matters
Fable 5 ships with classifiers that reroute risky queries to Opus 4.8. Here is what gets blocked, what does not, and why Anthropic did it.
- ArticleGuide
Claude Fable 5 Pricing, Access, and Getting Started
Fable 5 costs $10 per million input tokens and $50 for output. Here is who gets it, what the June 22 window means, and when to pick it.
- ArticleNews
From Leak to Launch: The Full Claude Mythos 5 Story
A leaked draft, a security program with NATO on the partner list, and an IPO filing: the road to Claude Fable 5 was anything but quiet.
- ArticleComparison
Claude Fable 5 vs. Opus 4.8 vs. GPT-5.5: The Numbers
Fable 5 posts 80.3% on SWE-Bench Pro against 69.2 for Opus 4.8 and 58.6 for GPT-5.5. We ran the price-per-point math so you do not have to.
- ArticleNews
Claude Fable 5 Explained: The First Mythos-Class AI
Anthropic just shipped its first Mythos-class model to the public. Here is what Fable 5 can do, what it costs, and why it is a new tier.