Anthropic sets AI performance records with new Mythos 5, Fable 5 frontier models
Anthropic PBC today introduced Claude Mythos 5 and Claude Fable 5, two large language models that it says outperform the competition across a wide range of benchmarks.
The LLMs are derived from the Claude Mythos Preview algorithm that the company debuted in April. The model made headlines for its ability to find highly complicated cybersecurity vulnerabilities. According to Anthropic, Mythos 5 and Fable 5 both surpass its performance.
Fable 5 is broadly available to the public. It blocks prompts that relate to high-risk use cases such as cybersecurity vulnerability discovery. Mythos 5, by contrast, includes more relaxed guardrails and will only be available to a limited number of organizations. Anthropic PBC will work with the US government to manage access to the model.
The company says that Mythos 5 is the first model in the Claude series with the ability to “consistently produce novel, compelling scientific hypotheses.” The company asked the LLM to propose explanations for several molecular biology phenomena that scientists don’t yet fully understand. According to the company, several of Mythos 5’s suggestions were so promising that its researchers decided to launch a series of experiments aimed at verifying them.
