Tool tag: Reasoning

GPT-6 Astra

OpenAI's flagship since September 4, 2026. A 1,050,000-token reasoning model for long-horizon agentic work, with native computer use.

Inkling

Thinking Machines Lab's first open-weights model: a 975B-parameter multimodal MoE with 41B active, 1M-token context and controllable thinking effort.

Nemotron 3 Ultra

NVIDIA's open Nemotron line: the 550B/55B-active Nemotron 3 Ultra flagship and Nemotron 3.5 Lightning, a 30B/3B-active agent-execution model, both OpenMDW.

DeepSeek V4

DeepSeek's open-weight V4 family: V4-Pro (1.6T/49B), V4-Flash (284B/13B) and the experimental V4-Flash-Vision-Exp. MIT weights, 1M context.

Grok

SpaceXAI's frontier AI assistant with real-time X integration, deep reasoning, and an unfiltered approach for power users. Formerly an xAI product.