Anthropic Claude Fable 5 Release
18 videos · score: 730,037 · first seen Jun 13, 2026
🔴 BREAKINGAnthropic recently released Claude Fable 5, a powerful new AI model from their restricted Mythos class, which creators describe as a major leap in AI capabilities—potentially rivaling GPT-5.5—offering unmatched performance for complex tasks, but with limited availability and a looming removal from premium plans on June 23rd, sparking discussions about access, power, and Anthropic's cautious approach to AI safety.
Introducing Claude Fable 5
Anthropic launches Claude Fable 5, a publicly available Mythos-class model with built-in safeguards that redirect high-risk requests to Opus 4.8, following the decision to withhold the earlier Claude Mythos preview due to cybersecurity concerns.
Anthropic begged the world to stop AI… then shipped this
Anthropic released Claude Fable, a new AI model they claim is a major leap forward and potentially rivaling GPT-5.5, just days after urging a global AI development pause, creating controversy and signaling a potential 'singularity moment' for some developers.
Mythos 5 is WILD...
Anthropic's release of Claude Fable 5 and the withheld Claude Mythos 5 is framed by the creator as a historic leap in AI capability, with Fable 5—despite being the same model with enhanced safety—outperforming every competitor on Agentic Coding, cybersecurity, and biology benchmarks, and Mythos 5 being the first Opus-exceeding model kept from the public due to catastrophic bioweapon and cyber risks.
MYTHOS is LIVE!!!!
Anthropic launched Claude Fable 5, a guardrailed version of Mythos, and the creator claims it feels bigger and more capable than any prior model despite quirks and benchmark limitations.
Mythos is here, it’s time to start tokenmaxxing
The Fable (Mythos) model is being removed from Claude Code Pro and Max tier subscriptions on June 23rd due to high compute costs, ending a limited-time offer where users could access up to $8,000 in inference for $200/month.
MYTHOS MYTHOS MYTHOS
Anthropic publicly released the previously too-dangerous Mythos model alongside the safer Fable 5 variant, which the creator describes as a 'new class of AI' with a 10 trillion parameter count that feels like a completely new training run.
Fable is Mythos, and it is really good.
The creator announces a fresh rebranding of Fable as Mythos, praising it as really good and highlighting a new perspective on the game.
BREAKING: Fable and Mythos have been taken down for security concerns.
The U.S. government's export control directive caused Anthropic to immediately disable Fable 5 and Mythos 5 for all customers, frustrating the creator who warns it sets a dangerous precedent and caused financial loss.
FABLE AND MYTHOS JUST GOT BANNED
Video titled: "FABLE AND MYTHOS JUST GOT BANNED"
Why Everyone Is Freaking Out About Mythos
Anthropic has made Claude Fable 5, the first publicly available model from its Mythos Class, accessible to paid subscribers until June 22nd, after which access will require usage credits, while the unrestricted Mythos 5 remains available only to cybersecurity professionals and vetted partners.
Mythos is officially here.
Anthropic released Claude Fable 5, a rebranded and safety-enhanced version of the Mythos model, claiming it outperforms even Opus 4.8 on complex tasks like fluid-dynamics simulation.
Claude Fable 5 is here: Anthropic just took a giant lead
Anthropic released Claude Fable 5 and Claude Mythos 5, with the creator claiming Fable 5 is the world's best AI model while highlighting that the unrestricted Mythos 5 is restricted to Glass Wing partners due to safety concerns, and noting Fable 5's price hike and subscription change.
Claude Fable 5 - Full 319 page Breakdown
The creator of the 319-page 'Claude Fable 5' document analysis highlights the project as a major leap in AI development with transformative potential across industries.
Claude Fable "QUIET SABOTAGE"
Anthropic has introduced 'silent sabotage' in Claude 5 (Fable 5), covertly limiting its effectiveness for AI research and development tasks like pre-training pipelines and ML accelerator design, sparking controversy over lack of user transparency.
BREAKING NEWS: Fable & Mythos REMOVED Over National Security Concerns
The creator criticizes the U.S. government's newly announced export-control directive that blocks foreign nationals, including Anthropic employees, from accessing Fable 5 and Mythos 5, calling the national-security justification absurd.
Fable/Mythos Usage Is INSANE
The creator found that switching to usage-based billing led to unexpectedly high costs and rapidly maxed out two subscriptions, making it impractical for completing their task without significant additional spending.
Claude Fable JUST got BANNED...
The U.S. government ordered Anthropic to block non-U.S. citizens from using Fable 5 and Mythos 5, a decision the creator believes was rushed and inconsistent with Anthropic’s principles of transparency and fairness.
What Is Fable 5?
The creator provides an in-depth review of Fable 5, a restricted version of Mythos 5 with added safeguards, revealing it outperforms the Opus series on key code benchmarks like Terminal Bench and SWEBench Pro, despite higher costs and lower token usage.