The Batch weekly: GPT-6 Astra launch highlights
DeepLearningAI's weekly newsletter says Astra supports over 1M input tokens and 5 reasoning levels, and that total cost per task may be lower.

The skills required to be an engineer in the age of AI are changing fast. Here is your quick summary of this week's issue of The Batch: 🧵 1️⃣ Shaping the Build AI engineering requires more than using AI to write code. To drive impact, developers must master: • Fast build-and-feedback loops • Product and design judgment • Stakeholder communication • High agency ownership 2️⃣ GPT-6 Astra OpenAI launched GPT-6 Astra with 1M+ input tokens and 5 reasoning levels. Benchmark data on ARC AGI 3 and other tasks shows higher per token rates can yield lower total cost per task due to better efficiency. 3️⃣ Claude Fable 5.1 Anthropic updated Fable 5.1, tying for top marks on the Artificial Analysis Intelligence Index v4.3. The model loosens some restrictions on cybersecurity tasks and is less wordy. 4️⃣ Transcription Wars Google, Meta, and Microsoft released new speech to text models. Gemini 3.5 Transcribe, Muse Voice Transcribe, and MAI-Transcribe 2 all achieved word error rates below 4%. 5️⃣ SelfCompact Johns Hopkins and Apple published SelfCompact, a method that uses explicit rubrics to prune LLM context history without parameter updates or fine-tuning. 6️⃣ Events DeepLearningAI is hosting another installment of our AI Dev developer event in NYC on November 30 and December 1. Early bird tickets are available now! Subscribe to read the full technical analyses: ⚡ https://hubs.la/Q04xfcHh0 #DeepLearningAI #AIEngineering #LLMs