Musk Admits Anthropic's Current AI Leadership, Mythos/Fable Model Gains Recognition

On July 9, 2026, Elon Musk posted acknowledging his previous misjudgment of Anthropic, stating it is the current AI leader with the optimal Mythos/Fable model, and confirming he will not cut off cooperation.

On July 9, 2026, Elon Musk posted acknowledging his previous misjudgment of Anthropic, stating it is the current AI leader with the optimal Mythos/Fable model, and confirming he will not cut off cooperation.

Business Logic Behind the Statement

Musk had previously publicly criticized Anthropic multiple times. This shift toward recognition reflects the dynamic adjustment of technical evaluation and cooperative relationships in the competitive AI landscape. The post explicitly notes the leading position of the Mythos/Fable model and anticipates that Anthropic will release a Mythos 2 version. Musk also cited the precedent of Tesla's open-sourced patents and open Supercharger network, indicating his tendency to maintain openness when dealing with competitors.

Impact on Stakeholders

For developers, Musk's statement may reduce concerns about using Anthropic models. Enterprise users need to consider cooperation stability: Musk clearly stated he will not cut off cooperation, signaling to companies relying on multi-model strategies that the interface between Anthropic and ecosystems like xAI is likely to remain available.

Anthropic's latest funding round ranks among the top large-scale tech private placements, second only to OpenAI. Investors may view Musk's recognition as an additional reference, influencing future investment decisions. Competitors like xAI face public comparison of model performance and must respond through product iteration.

Historical Comparison and Landscape Changes

Musk had previously accused Anthropic of issues such as bias in its models and mentioned that Anthropic once cut off xAI's access to the Claude model. The contrast between past criticism and current recognition highlights the rapid shift in technical leadership within AI competition. A similar precedent is Musk's handling of Tesla's patent open-sourcing, indicating his tendency to define leadership through performance rather than barriers in the tech field.

Forward-Looking Assessment

Based on existing facts, Anthropic will continue advancing the Mythos series iteration. Developers should prioritize testing the actual call stability of the Mythos/Fable model, while enterprises should retain the Anthropic option in a multi-model architecture. All judgments are anchored to the content of the July 9, 2026 post.