Mycelis
OpenAI
GPT-4.5 is a commercial model from OpenAI. Focus areas: Chat, Enterprise, Reasoning. Context window: 128,000 tokens.
Context window
128k
Reasoning level
9 / 10
MMLU
90.5
HumanEval
91.0
Pricing
$75.00 per 1M input tokens
Usable the moment you add a key — your own (BYOK) or one managed by Mycelis. No GPU deployment or infrastructure needed.