News tagged "tool-calling"

Diagram showing Chat Completions API fork versus Responses API for GPT-6 Astra tool calls, with a hard block on the Chat Completions path

GPT-6 Astra Cuts Chat Completions Tool Calling: What Operators Must Change Before Routing Traffic

GPT-6 Astra refuses Chat Completions tool calls, drops temperature and top_p, adds two new error codes operators must handle, and runs async misalignment monitoring that changes the latency contract for Responses API users.

September 4, 2026via OpenAI API Changelog

A clean editorial illustration of three orbital tiers with a code execution symbol at center, representing GPT-5.6's programmatic tool calling and multi-model routing policy on a muted neutral background

openai

GPT-5.6 GA: Programmatic Tool Calling Moves Tool Orchestration Inside the Model — What Operators Must Update

GPT-5.6 Sol, Terra, and Luna are generally available with confirmed pricing and a new Responses API feature — Programmatic Tool Calling — that shifts tool dispatch logic inside the model itself, bypassing the gateway tool-orchestration layer most operators rely on.

July 13, 2026via OpenAI