GPT-Rosalind
Last verified September 15, 2026 · OpenAI pricing ↗$5.00/1M input · $25.00/1M output · 1.1M context · OpenAI
Limited access
Not generally available
GPT-Rosalind is not on OpenAI’s open price list. Access is gated to vetted partners or a waitlist, so the rate below is what those customers pay rather than something you can sign up for. It is excluded from the calculator’s default model list and from every ranking.
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Pricing Details
OpenAIOpenAI's life-sciences model, research preview April 16, 2026, GPT-5.5-based update June 3, 2026, generally available through the trusted-access program per the API changelog on September 8, 2026. Card: $5.00 input, $0.50 cached input, $25.00 output, Standard tier only. OpenAI states 'Billing for gpt-rosalind-research begins on October 5, 2026' and 'Cache-write pricing does not apply to this model'; usage before October 5 is unbilled. No Batch, Flex or Fast row and no long-context row are published. IDENTICAL to Claude Opus 5 on all three published lines ($5.00 / $0.50 / $25.00); Opus 5 additionally charges $6.25 to write a cache. Against its GPT-5.5 base ($5.00 / $0.50 / $30.00) it is 1.0x input and 0.833x output, the only OpenAI specialist priced below its base (GPT-5.6 Cyber is 3.125x Sol). Exactly 1.25x GPT-5.6 Sol's promotional $4.00 / $0.40 / $20.00 on every line. ChatGPT Enterprise credit card: 125 / 12.50 / 625 credits per million tokens (25 credits per dollar) and 20 credits per Chat message against Sol's 10. CONTEXT WINDOW AND MAX OUTPUT ARE NOT PUBLISHED: /api/docs/models/gpt-rosalind-research returned 404 on 2026-09-15 and the models index card links to the pricing page; the 1,050,000 / 128,000 here are the GPT-5.5 base's figures as a placeholder and should not be relied on. ACCESS: Enterprise or Business agreements approved through trusted access, or an OpenAI-managed workspace for qualified organisations without one; API use is 'for approved internal research tools, workflows, and applications' and 'not available for customer-facing products or external commercial applications'. In ChatGPT the help centre files it under 'Legacy models' in the picker. OPENAI-REPORTED BENCHMARKS vs GPT-5.5 (June 3 post): MedChemBench 27.5 vs 25.1 with 7.2% fewer tokens, GeneBench 21.6 vs 20.4 with 31% fewer tokens, LabWorkBench 63.2 vs 55.8 with 5.3% fewer tokens; input/output split of the token savings not published. April post: leading BixBench score among published models, beats GPT-5.4 on 6 of 11 LABBench2 tasks. Model ID: gpt-rosalind-research.
Input / 1M tokens
$5
Output / 1M tokens
$25
Context Window
1.1M
Max Output
128K
Price History
Launched at current price on 2026-04-16. No price changes recorded since.
Frequently Asked Questions
Common questions about GPT-Rosalind pricing and usage