Pricing · OpenAI

GPT-5.4 Mini

OpenAI's gpt-5.4-mini, 400K tokens of context. Every number on this page was read off OpenAI's own pricing page — never estimated, never recalled from memory.

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How OpenAI describes it

“GPT-5.4 Mini brings the strengths of GPT-5.4 to a faster, more efficient model designed for high-volume workloads.”

Pricing

Prices in US dollars per 1M tokens, as OpenAI's official pricing page printed them when they were last verified, on October 26, 2026.

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, GPT-5.4 Mini costs $1.65: $0.75 for input and $0.90 for output, at the prices above. Same formula as the calculator; change the volume there.

Where this price sits

$0.75 per 1M input tokens is the 23rd cheapest input price of the 77 current models with a verified price on AI Signal, and the 3rd of OpenAI's 17. Output costs 6.0× the input price.

Other price lists OpenAI publishes for GPT-5.4 Mini

The prices above are OpenAI's Standard list, the one the table and the calculator use. OpenAI also sells GPT-5.4 Mini on 3 other lists, each with a condition. Figures and wording are quoted from OpenAI's own pages as read on the date shown; AI Signal computes none of them.

• Batch · half of Standard on every column · wait: results within 24 hours

  Printed for GPT-5.4 Mini: $0.375 input, $0.0375 cached input, $2.25 output, per 1M tokens.

  Learn how to use OpenAI's Batch API to send asynchronous groups of requests with 50% lower costs, a separate pool of significantly higher rate limits, and a clear 24-hour turnaround time. Batches that do not complete in time eventually move to an expired state; unfinished requests within that batch are cancelled

  Source, read October 26, 2026

• Flex · half of Standard on every column, the same figures as Batch · accept slower responses and occasional unavailability

  Printed for GPT-5.4 Mini: $0.375 input, $0.0375 cached input, $2.25 output, per 1M tokens.

  Flex processing provides lower costs for Responses or Chat Completions requests in exchange for slower response times and occasional resource unavailability. Due to slower processing speeds with Flex processing, request timeouts are more likely.

  Source, read October 26, 2026

• Fast mode · double Standard on every column, except the GPT-4.1 and GPT-4o models, which the page prices at less than double · pay more to be scheduled first

  Printed for GPT-5.4 Mini: $1.50 input, $0.15 cached input, $9.00 output, per 1M tokens.

  Priority processing was renamed Fast mode on July 30, 2026. If your traffic ramps too fast, the system may downgrade some Fast mode requests to standard speeds and charge standard rates.

  Source, read October 26, 2026

Mentioned in

One post on AI Signal cites GPT-5.4 Mini. The sentence is the post's own, taken from where it links here.

• AI Pricing This Week: OpenAI Shutdown, Mistral, Oct 19-25 · October 26, 2026

  On October 26, from OpenAI's "All models" table, we added five current rows: GPT-5.4 mini at $0.75 / $4.50, GPT-5.2 at $1.75 / $14.00, GPT-5.2 Pro at $21.00 / $168.00, GPT-5.5 Cyber at $12.50 / $75.00 and GPT-5 Search API at $1.25 / $10.00.

Against GPT-4.1 Mini

GPT-4.1 Mini is the earlier version of the same name in this dataset (deprecated). Against GPT-4.1 Mini, GPT-5.4 Mini has input at $0.75 against $0.40, 1.9× as much; output at $4.50 against $1.60, 2.8× as much; cached input at $0.075 against $0.10, 1.3× less (per 1M tokens). Its prices were verified October 26, 2026: GPT-4.1 Mini

Specifications

GPT-5.4 Mini's API identifier, provider and limits, from the same row of the dataset as the prices above.

GPT-5.4 Mini was released on March 17, 2026. It returns up to 128K tokens per response, against a context window of 400K tokens.

Questions about GPT-5.4 Mini pricing

How much does GPT-5.4 Mini cost per million tokens?

$0.75 per 1M input tokens and $4.50 per 1M output tokens, read on OpenAI's official pricing page on October 26, 2026.

What does a cached input token cost on GPT-5.4 Mini?

$0.075 per 1M cached input tokens, 10% of the $0.75 input price.

Added on 2026-10-26 (task 338). Price read on 2026-10-26 on OpenAI's pricing page, in its folded 'All models' table, which the page draws in the browser and its Markdown version (developers.openai.com/api/docs/pricing.md) prints; Standard table, columns Model, Input, Output, Cached input, per 1M tokens: 'gpt-5.4-mini | $0.75 | $4.50 | $0.075 |'. Its model page (developers.openai.com/api/docs/models/gpt-5.4-mini), read the same day, prints 'Input $0.75 Cached input $0.075 Output $4.50', '400,000 context window', '128,000 max output tokens' and 'Aug 31, 2025 knowledge cutoff'; its Markdown version adds 'Maximum input tokens: 272,000'. The release date is the date of its only snapshot, 'gpt-5.4-mini gpt-5.4-mini-2026-03-17'. OpenAI's deprecations page (read 2026-10-26) does not list it.

Verified October 26, 2026 against OpenAI's official pricing page. Confidence: confirmed. No price change recorded for this model. 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-6.1 Terra GPT-6 $1.00 in · $5.00 out
• GPT-5 Search API GPT-5 $1.25 in · $10.00 out
• GPT-5.2 GPT-5.2 $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
• GPT-Rosalind GPT-Rosalind $5.00 in · $25.00 out
• GPT-Rosalind Discovery GPT-Rosalind $5.00 in · $25.00 out
• 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
• GPT-5.5 Cyber GPT-5.5 $12.50 in · $75.00 out
• GPT-5.2 Pro GPT-5.2 $21.00 in · $168.00 out

Cheaper or equally priced alternatives

Current models with an input price at or below $0.75 per 1M tokens. The cheapest of these, Mistral Large 3, is 1.5× cheaper on input.

• Gemini 3.8 Flash Google $0.75 in · $3.75 out · promo
• Gemini 3.6 Flash Google $0.75 in · $3.75 out · promo
• Mistral Large 4 Mistral $0.70 in · $2.10 out
• Mistral Large 3 Mistral $0.50 in · $1.50 out

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