#api

OpenAI moved the GPT-5.6 fight onto price and latency. Luna is now 80% cheaper, Terra is 20% cheaper, and Sol gets an API Fast mode that can run up to 2.5x faster than Standard processing.

OpenAI made GPT Transcribe and GPT Live Transcribe generally available on July 28, 2026. The new default path separates completed-file transcription from low-latency live audio and adds prompt, keyword, and multi-language hints.

OpenAI has put a public July 9 launch window on three GPT-5.6 models, shifting attention from one flagship model to a tiered lineup. The source tweet has passed 3.6 million views and says global preview access is expanding now.

Starting July 2, organizations that have not run inference on a fine-tuned model in the past 60 days can no longer create new fine-tuning jobs. Active existing customers lose new job creation on January 6, 2027, while inference on existing fine-tuned models continues until the base model is deprecated.

OpenAI launched GPT-Realtime-2, GPT-Realtime-Translate, and GPT-Realtime-Whisper — new voice API models covering live reasoning, real-time translation across 70+ languages, and streaming transcription. The Realtime API is now generally available for production use.

Anthropic's Claude Platform is now generally available on AWS, offering full Claude API feature parity with AWS IAM authentication, CloudTrail audit logging, and a single AWS invoice that retires against existing commitments.

Google has updated the Gemini API File Search tool to support multimodal content including images, audio, and video, making it easier for developers to build efficient, verifiable RAG systems.

OpenAI has launched GPT-Realtime-2 in its API, bringing GPT-5-class reasoning to real-time voice interactions. The release also includes GPT-Realtime-Translate for live multilingual speech translation and GPT-Realtime-Whisper for streaming transcription.

xAI has released Grok 4.3 on its API, claiming top spots on agentic tool calling and instruction-following leaderboards, and ranking #1 in enterprise domains such as case law and corporate finance. It supports a 1M token context window at $1.25/M input and $2.50/M output.

A benchmark comparing vision agents (browser-use) to structured API agents on the same admin panel found vision agents cost roughly 45x more — and failed to complete the task without a 14-step explicit walkthrough.

xAI officially launched Voice Cloning through its API, allowing users to clone a custom voice in under 2 minutes or select from 80+ pre-built voices across 28 languages for voice agents, audiobooks, and game characters.

HN did not greet GPT-5.5 with applause first. The thread went straight to pricing, context tiers, and whether the model actually behaves better once real coding work starts.