#Fable

Tokenless is a model router and drop-in replacement for the OpenAI and Anthropic APIs — the same quality at less than half the cost.

I wouldn't be surprised if "the best model" becomes a niche concept over the next few years. For most production systems the winning architecture may end up being an orchestrator that knows when to call a cheap model when to escalate to a stronger one and…

Four frontier models, a blank canvas, and colored pencils. We tracked every stroke, dollar, and output as they tried to draw the Mona Lisa.

Benchmarking over 1,000 agentic tasks demonstrates that routing between the open-source Kimi K3 model and the closed Fable 5 model creates a new state-of-the-art (SoTA) approach that surpasses the performance of either model alone.…

I gave Claude Fable 5 and GPT-5.6 Sol the same unpublished NP-hard optimization problem, with and without their native /goal mode. Fable 5 is a beast; /goal is not a game changer.

We gave Claude Fable 5 and GPT-5.6 Sol the same song, a budget, web search, and local ffmpeg, then let each autonomously direct a music video.

A government export control directive spurred Anthropic to cut off all customer access to its Fable 5 and Mythos 5 AI models.

Anthropic received a US export control directive Friday “to suspend all access to Fable 5 and Mythos 5 by any foreign national,” kicking off a weekend of chaos.

Anthropic's Fable 5 launches June 9 as its first publicly accessible Mythos-class model — 1M context, 128K output, SOTA on coding and long-horizon tasks, at $10

The US government has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States.

Anthropic confirmed tonight that it has disabled access to Claude Fable 5 and Claude Mythos 5 to all customers, following an export control directive from the US government.

Average results with 59.8% on functional solves and just 19.0% on security solves

Anthropic said users should know what safeguards are in place and why, and said it would make its distillation guardrail as visible as other safety measures.

After two days of experience with Claude Fable 5 I think the best way to describe it is relentlessly proactive. It knows a whole lot of tricks and it will …

Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.

To protect against bioweapons, Anthropic told The Verge Fable’s ‘overly conservative’ safeguards block ‘most queries tied to biology work.’

Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.