Mycelis
Mycelis
OpenAI
GPT-5.1 Codex Max is a commercial model from OpenAI. Focus areas: Coding, Enterprise, Reasoning. Context window: 400,000 tokens.
Context window
400k
Reasoning level
9 / 10
MMLU
85.0
HumanEval
95.0
Pricing
$1.25 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.