The Loop · Issue N°033

The Loop

A field journal of the AI frontier — for engineers who ship.

Tag

#Frontier Models

· News
News
Same price as Opus 4.8, half the price of Fable 5 — Anthropic launched Claude Opus 5 as a flagship that quietly undercuts its own flagship
On Thursday Anthropic launched Claude Opus 5 at the same $5/$25 per-million-token price as Opus 4.8. The pitch is "Fable 5 intelligence at half the cost" — a pitch that quietly repositions Fable 5 as the model most developers no longer have a reason to keep buying.
Jul 26, 2026 · by AI Blog Editor
by AI Blog Editor
Jul 26, 2026
· News
News
Same harness, second name — OpenAI launched GPT-5.6 Sol, Terra and Luna on Friday into the customer-by-customer government clearance that took Anthropic offline thirteen days earlier
On Friday June 26, 2026, OpenAI previewed GPT-5.6 in three flavours — Sol, Terra, Luna — and confirmed that initial access runs through about twenty partners vetted by ONCD, OSTP and Commerce. Thirteen days earlier the same three offices switched off Anthropic.
Jun 30, 2026 · by AI Blog Editor
by AI Blog Editor
Jun 30, 2026
· News
News
Disagree and comply — the Commerce Department issued the first export-control directive on a deployed frontier model, and Anthropic was dark an hour and forty minutes later
At 5:21pm Eastern on June 12, the US Commerce Department ordered Anthropic to suspend Fable 5 and Mythos 5 for any foreign national. The lab complied within an hour and forty minutes. By Saturday morning Anthropic had published the disagreement in writing.
Jun 13, 2026 · by AI Blog Editor
by AI Blog Editor
Jun 13, 2026
· News
News
We made the wrong tradeoff — Anthropic ships Claude Fable 5 with an invisible competitor-slowing clause and reverses inside twenty-four hours
On June 9 Anthropic launched Claude Fable 5 and Mythos 5 at $10/$50 per million tokens — double Opus 4.8. Twenty-four hours later the system card had been read closely enough to find an invisible competitor-slowing clause, and Anthropic reversed.
Jun 11, 2026 · by AI Blog Editor
by AI Blog Editor
Jun 11, 2026
· News
News
Doubling every four months — Anthropic publishes the curve and asks the industry to brake, three days after the S-1
On June 4, Marina Favaro and Jack Clark published Anthropic's four-month doubling curve and called for a coordinated industry pause. The post went up three days after Anthropic's confidential S-1. David Sacks called the timing regulatory capture.
Jun 8, 2026 · by AI Blog Editor
by AI Blog Editor
Jun 8, 2026
· News
News
Cut to thirty — Trump's voluntary frontier-AI review is short enough for the labs to fit inside a release cycle
On June 2, 2026 Trump signed an executive order asking frontier AI labs to voluntarily submit covered models for federal cyber-capability review up to 30 days before release. The May draft had it at 90 days. The number is the policy.
Jun 5, 2026 · by AI Blog Editor
by AI Blog Editor
Jun 5, 2026
· News
News
Flash at Pro prices — Gemini 3.5 Flash completes the three-lab pricing pattern
Google launched Gemini 3.5 Flash on May 19 at $1.50/$9 per million tokens — 3x the previous Flash and within a rounding error of Pro. The third frontier lab in a row to raise the floor under the new generation.
May 21, 2026 · by AI Blog Editor
by AI Blog Editor
May 21, 2026
· News
News
GPT-5.5 "Spud" — twice the price, split benchmarks, and a polite request to start your prompts over
OpenAI shipped GPT-5.5 on April 23, doubled the API price, and split the benchmark trophies with Anthropic. The line buried in the prompting guide is the one that should worry you — "treat it as a new model family to tune for, not a drop-in replacement.
Apr 25, 2026 · by AI Blog Editor
by AI Blog Editor
Apr 25, 2026