Product

Claude Fable

4 articles First covered Jul 1, 2026, latest Sep 3, 2026

OpenAI's GPT-6 Astra launch card, showing a white spiral galaxy of stars on black with the words GPT-6 and Astra set on either side.

OpenAI shipped GPT-6 Astra with an AGI claim and a build that refuses exploit work

Brockman called it the AGI era. Astra shipped to Daybreak enterprises first at $10/$50 per million tokens, and the cyber build stays gated.

Anthropic's launch card for Claude Fable 5.1 and Claude Mythos 5.1, white serif text over a pale blue sky with clouds and a daytime moon.

AI·last week

Six Claude 5 models in twelve weeks. Fable 5.1 is the first to watermark its output.

Anthropic's Fable 5.1 doubles a science benchmark and cuts cache reads 75%. Independent tests measured tasks costing up to 3x more than Fable 5.

Anthropic's Claude Opus 5 announcement artwork: a large numeral 5 formed from an arrangement of vintage speckled bird-egg illustrations on a cream background.

AI·2 months ago

Claude Opus 5 nears Fable 5's frontier intelligence at half the price

Anthropic shipped Claude Opus 5 at the same $5/$25 per million tokens as Opus 4.8. It nears Fable 5's intelligence at half the cost, with new effort and fallback controls.

Anthropic's Claude branding on a soft gradient panel, used to illustrate the redeployment of Fable 5 after export controls were lifted.

Policy·2 months ago

The US lifted its export ban on Anthropic's Fable 5. The model returns Wednesday.

The Commerce Department cleared Claude Fable 5 and Mythos 5, ending an 18-day export-control freeze. Anthropic redeploys Fable 5 globally on Wednesday with tighter safeguards.