It's already June 9th, and Gemini 3.5 Pro and GPT-5.6 are nearing release (Google even already announced 3.5 Pro during i/o)
Rumor has it that GPT-5.6 will be released as early as next week.
So far, it's safe to say that - guardrails aside - Anthropic is truly the frontier lab that's entering a new league with Mythos/Fable.
Gemini 3.5 Pro and GPT-5.6 have a lot to deliver and are now under pressure.
This release has certainly boosted Anthropic's upcoming IPO. Anthropic has proven that they are still capable of making significant leaps in performance and efficiency. There's no end in sight.
But the pressure on the competition is mounting.
And remember that Claude Mythos was (and probably is) still leader in Long Horizon software Tasks
Claude 5 Fable tl;dr - It is state-of-the-art on nearly all tested benchmarks of AI capability, showing exceptional performance in software engineering, knowled...