Magistral-Small-2509, released by Mistral in September 2025, is an open-source 24-billion-parameter multimodal model that supports both text and images through special [THINK] tokens. It is designed for developers and researchers but lacks a polished UI for casual users. Pricing is competitive, yet free access is limited by GPU quotas.
Tinker, Mira Murati’s initial product from her AI startup Thinking Machines Lab, is a managed API for fine-tuning large language models via Python, designed for research teams. Currently in private beta, it offers simplicity in model training while managing distributed complexities, but lacks public availability, clear pricing, and production readiness.