Question 1

What is the latest AI model from Anthropic?

Accepted Answer

Anthropic's primary flagship model is Claude Opus 5.5 (Undisclosed (Anthropic), 1,000,000 tokens context). Released Sept 22, 2026; Anthropic's flagship with Fable-level agentic coding at 40% lower cost than Opus 5 ($4/$20), beating GPT-6 Astra on FrontierCode at a fifth of the cost per task. Their latest research checkpoint is Claude Sonnet 5.5 (Fast Balanced).

Question 2

What is the latest AI model from OpenAI?

Accepted Answer

OpenAI's primary flagship model is GPT-6.1 Sol (Undisclosed (OpenAI), 1,050,000 tokens context). Released Sept 29, 2026; upgrade to GPT-6 Sol with near-Astra coding and computer use at one-fifth of Astra's price ($2/$10). Their latest research checkpoint is GPT-6 Luna (High-Volume Efficient).

Question 3

What is the latest AI model from Google DeepMind?

Accepted Answer

Google DeepMind's primary flagship model is Gemini 4 Argon (Undisclosed (Google DeepMind), 1,048,576 tokens context). Announced Sept 30, 2026; Gemini 4 Argon is Google DeepMind's frontier model for long-horizon software engineering, enterprise knowledge work, and cyber defense, with 1M output tokens and an introductory price of $2/$10 per 1M tokens. Their latest research checkpoint is Gemini 3.8 Live Extended Thinking (Live Speech-to-Speech).

Question 4

What is the latest AI model from xAI?

Accepted Answer

xAI's primary flagship model is Grok 4.7 (Undisclosed (xAI, larger base than 4.6), 500,000 tokens context). Released Sept 21, 2026; xAI's flagship for coding and knowledge work on a larger base with longer RL, matching Grok 4.6 price/speed ($2/$6) with 46.3% CursorBench 4.0 and 71.0% DeepSWE v1.1. Their latest research checkpoint is Grok Voice Transcribe 2.0 (Speech-to-Text).

Question 5

What is the latest AI model from DeepSeek?

Accepted Answer

DeepSeek's primary flagship model is DeepSeek V4.1 Flash (552B MoE (8B / 16B Activated), 1,000,000 tokens context). Released Sept 10, 2026; first of DeepSeek's Causal Encoder-Decoder family with native image+text, 1M context and 384K output. Replaces V4-Flash and V4-Pro from Sept 14. Their latest research checkpoint is DeepSeek V4-Pro (0813) (Frontier MoE).

Question 6

What is the latest AI model from Meta AI?

Accepted Answer

Meta AI's primary flagship model is Muse Spark 1.3 (14B Dense Real-time Multimodal, 262,144 tokens context). Released Sept 3, 2026; Meta's ultra-cheap ($0.05/M in, $0.15/M out) real-time multimodal model with native simultaneous voice, vision, and ultra-low latency response under 80ms. Their latest research checkpoint is Muse Voice Transcribe (Streaming Speech).