open-weights
Why Mistral Large 4's blog post and model card disagree on its size
Mistral's 2026-10-06 announcement says 49B active and 1T total parameters; its model card says 52B active and 1.05T total.
Reflection Beam: 501B open-weight model, weights later in October 2026
Reflection Beam is a 501B sparse MoE with 23B active parameters for coding and agent tasks; Reflection plans Apache 2.0 weights later in October 2026.