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Model launch

OpenAI releases GPT-5.4 Pro (batch)

GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...

Type
MODEL_LAUNCH
Detection
listing
Confidence
medium
Status

Primary source

OpenRouter models API · openrouter.ai/openai/gpt-5.4-pro:batch ↗

Structured listing of 400+ hosted models: prices per token, context length, modalities, supported parameters and listing date. Prices are OpenRouter's listed prices, which usually mirror first-party pricing but can differ.