Pricing · OpenAI

GPT-Rosalind

OpenAI's gpt-rosalind-research. Every number on this page was read off OpenAI's own pricing page — never estimated, never recalled from memory.

Pricing

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, GPT-Rosalind costs $10.00: $5.00 for input and $5.00 for output, at the prices above. Same formula as the calculator; change the volume there.

Where this price sits

$5.00 per 1M input tokens is the 55th cheapest input price of the 67 current models with a verified price on this site, and the 8th of OpenAI's 11. Output costs 5.0× the input price.

Mentioned in

One post on this site cites GPT-Rosalind. The sentence is the post's own, taken from where it links here.

• Prompt Caching Is Not 10% Everywhere: What a Cache Hit Costs Across Eight Providers · September 16, 2026

  OpenAI, all eight current models: GPT-6 Astra $1.00 on $10.00, GPT-5.6 Sol $0.40 on $4.00, Terra $0.20 on $2.00, Luna $0.02 on $0.20, GPT-5.3 Codex $0.175 on $1.75, ChatGPT (chat-latest) $0.50 on $5.00, GPT-5.6 Cyber $1.25 on $12.50 and the access-restricted GPT-Rosalind $0.50 on $5.00, verified September 14, 2026, and September 16 for Astra and Rosalind.

Recorded price changes

Every change this site has recorded for GPT-Rosalind, with the date it took or takes effect and why. Corrections of our own reading are listed too, and say so.

• September 16, 2026 · added to this dataset, our omission

  Omission on our side, not a price change by any provider. On September 16, 2026, while reading OpenAI's pricing page by hand for a check on batch and flex prices, GPT-6 Astra turned up in the Standard table with no row in this dataset. A hand sweep of the first-party pricing pages of OpenAI, Anthropic, Google, xAI, Mistral, DeepSeek, Alibaba and Cohere against the dataset then found eight models charged per token with text output and a published price that had no row: GPT-6 Astra and GPT-Rosalind (OpenAI), Claude Haiku 3.5 (Anthropic, retired on the first-party API but still priced), Gemini 2.5 Computer Use Preview, Gemini Robotics ER 2 Preview and its Streaming variant, and Gemini Omni Flash Preview, a separate endpoint id from the generally available Omni Flash row at the same prices (Google), and GLM 5.3 (served by Mistral). Astra had been in OpenAI's Standard table at least since September 10, 2026, when the weekly detector first received that page's text, and this site's OpenRouter explainer already named it from the September 15 snapshot. The weekly detector could not have caught any of these: it compares the rows that exist against the page and has no step for models the page lists and the dataset does not. Each new row carries the page quote it was read from. Audio, image, video, embedding and per-minute models found in the same sweep were left out on purpose: the table covers models charged per token with text output.

  Source

Every price change recorded on this site →

Specifications

Questions about GPT-Rosalind pricing

How much does GPT-Rosalind cost per million tokens?

$5.00 per 1M input tokens and $25.00 per 1M output tokens, read on OpenAI's official pricing page on September 28, 2026.

What does a cached input token cost on GPT-Rosalind?

$0.50 per 1M cached input tokens, 10% of the $5.00 input price.

Added 2026-09-16 after a hand sweep of OpenAI's pricing page found it missing from this dataset (our omission). Pricing page, 'Specialized models' table, Standard: 'Life Sciences gpt-rosalind-research $5.00 $0.50 $25.00' (input, cached input, output), followed by 'Billing for gpt-rosalind-research begins on October 5, 2026. Cache-write pricing does not apply to this model. Access is limited to approved internal research through the trusted-access program'. No context window on the pricing page; the model page returned 404 on 2026-09-16, and the models index lists it as 'GPT-Rosalind Life sciences reasoning for approved organizations'. OpenAI's pricing page, read on 2026-09-30: 'Billing for gpt-rosalind-research begins on October 5, 2026.' and 'Access is limited to approved internal research through the trusted-access program'. No context window: its model page (developers.openai.com/api/docs/models/gpt-rosalind-research) returned 404 that day.

Verified September 28, 2026 against OpenAI's official pricing page. Confidence: confirmed. How the data is checked.

Other OpenAI models with a verified price

• GPT-6 Luna GPT-6 $0.10 in · $0.50 out
• GPT-5.6 Luna GPT-5.6 $0.20 in · $1.20 out
• GPT-5.3 Codex Codex $1.75 in · $14.00 out
• GPT-6.1 Sol GPT-6 $2.00 in · $10.00 out
• GPT-6 Sol GPT-6 $2.00 in · $10.00 out
• GPT-5.6 Terra GPT-5.6 $2.00 in · $12.00 out
• GPT-5.6 Sol GPT-5.6 $4.00 in · $20.00 out · promo
• ChatGPT (chat-latest) GPT $5.00 in · $30.00 out
• GPT-6 Astra GPT-6 $10.00 in · $50.00 out
• GPT-5.6 Cyber GPT-5.6 $12.50 in · $75.00 out

Cheaper or equally priced alternatives

Current models with an input price at or below $5.00 per 1M tokens.

• ChatGPT (chat-latest) OpenAI $5.00 in · $30.00 out
• Claude Opus 5 Anthropic $5.00 in · $25.00 out
• Claude Opus 4.8 Anthropic $5.00 in · $25.00 out
• Claude Opus 4.7 Anthropic $5.00 in · $25.00 out

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