30% Speed Boost and Lower API Rates Arrive as Anthropic Prepares IPO
San Francisco-based artificial intelligence company Anthropic unveiled two new AI models, Claude Fable 5.2 and Claude Mythos 5.2, on November 9, 2026. Software developers and enterprise clients can now access faster processing speeds and reduced token pricing as the firm sharpens its competitive position against OpenAI ahead of its initial public offering.
New 5.2 Tiers Slash Developer Token Fees and Boost Output Speeds by 30 Percent
Fable 5.2 is available to developers through the Claude API under the identifier claude-fable-5-2, targeting coding, reasoning, and AI agent tasks at rates of $8 per million input tokens and $40 per million output tokens. Access to Mythos 5.2 remains restricted to organizations vetted through specialized verification programs for cybersecurity and life-sciences research. Both models deliver up to 30 percent faster output performance than the previous Claude 5.1 generation, alongside improvements in coding, reasoning, and vision capabilities.
The release arrives five months after the initial Fable and Mythos launch and follows the October rollout of Claude Haiku 5.5, coming directly ahead of Anthropic’s IPO investor roadshow.
