Anthropic Launches

• Anthropic released Claude API with native fine-tuning capabilities on April 19, allowing enterprises to customize the model on proprietary datasets without requiring base model retraining. • The fine-tuning service supports context windows up to 200,000 tokens and is priced at $8 per million input tokens and $24 per million output tokens, competitive with OpenAI's pricing structure. • This release directly challenges OpenAI's GPT-5 announcement and positions Anthropic as an alternative for organizations seeking customizable AI solutions with enhanced safety guardrails.

• Anthropic announced Project Glasswing, a collaborative initiative involving Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks to secure critical software infrastructure. • The initiative provides select firms access to Claude Mythos2 preview model for defensive cybersecurity work, which has reportedly identified thousands of severe vulnerabilities in major operating systems and browsers. • The program aims to give defenders a durable advantage in the AI-driven cybersecurity era while controlling access to prevent misuse by attackers.

• Anthropic announced Project Glasswing, a cybersecurity initiative bringing together AWS, Apple, Broadcom, Cisco, CrowdStrike, Google, Microsoft, Nvidia, and Palo Alto Networks to identify and fix software vulnerabilities using its Claude Mythos Preview model. • The Claude Mythos Preview model achieves 93.9% accuracy on SWE-bench Verified, significantly outperforming Opus 4.6's 80.8%, and demonstrated the ability to find thousands of hidden bugs in critical systems. • Anthropic is committing up to $100 million in usage credits for Project Glasswing, plus $4 million in direct donations to open-source security organizations to strengthen cybersecurity infrastructure.