// openai

GPT-5.4 Nano

openai/gpt-5.4-nano

reasoningtool callingfile inputimage inputprompt caching
OpenRouter + LiveBenchAll modelsFull leaderboard

GPT-5.4 Nano costs $0.200 per 1M input tokens and $1.25 per 1M output tokens with a 400K-token context window.

A reasoning, tool-calling model from openai, released Mar 17, 2026. On LiveBench it scores 69.6 overall — #45 of 55 benchmarked models — and ranks highest in mathematics (#24).

Input / 1M
$0.200
Output / 1M
$1.25
Context
400K
LiveBench overall
69.6 · #45

Specs and pricing

Input price

USD per 1M prompt tokens

$0.200
Output price

USD per 1M completion tokens, reasoning included

$1.25
Blended price

3:1 input:output — #135 cheapest of 343 listed models

$0.463
Cached input read

Blank means not priced separately — not free

$0.020
Cache write
Context window400,000 tokens
Max output128,000 tokens
Input modalitiesfile, image, text
Tool callingYes
Extended reasoningYes
Knowledge cutoff2025-08-31
ListedMar 17, 2026
All OpenAI API pricing

Also listed as openai/gpt-5.4-nano:batch ($0.231 blended)— the same model at a different price or rate limit.

Benchmarks by category

LiveBench scores out of 100, with GPT-5.4 Nano's rank among the 55 benchmarked models listed here. Run: gpt-5.4-nano-xhigh.

Overall#45 of 55
69.6

$0.0500 measured per point

46.8

$0.2714 measured per point

Coding#47 of 55
70.8

$0.0123 measured per point

Reasoning#39 of 55
81.1

$0.0266 measured per point

Mathematics#24 of 55
91.0

$0.0268 measured per point

Data analysis#46 of 55
67.6

$0.0323 measured per point

Language#55 of 55
62.5

$0.0283 measured per point

67.2

$0.0331 measured per point

What GPT-5.4 Nano costs to run

Monthly list cost across five workload shapes, using the published cached-input rate where there is one. A floor, not a quote — batch discounts and cache writes aren't included.

WorkloadPer month
Support chatbot

1.2K in / 400 out × 200K requests

$135.04/mo
RAG assistant

8K in / 600 out × 100K requests

$163.00/mo
Coding agent

40K in / 4K out × 20K requests

$159.20/mo
Document extraction

20K in / 1.5K out × 50K requests

$284.75/mo
Bulk classification

500 in / 20 out × 5M requests

$535.00/mo
Price your own workload

Compare GPT-5.4 Nano with

The benchmarked models closest to it on overall score.

GPT-5.4 Nano FAQ

How much does GPT-5.4 Nano cost?

GPT-5.4 Nano lists at $0.200 per 1M input tokens and $1.25 per 1M output tokens, with cached input reads at $0.020 per 1M. A RAG assistant handling 100K requests a month (8K tokens in, 600 out) comes to about $163.00 at list price.

What is the context window of GPT-5.4 Nano?

GPT-5.4 Nano accepts up to 400,000 tokens of context and can return up to 128,000 output tokens per response.

Does GPT-5.4 Nano support tool calling?

Yes — GPT-5.4 Nano supports tool (function) calling and exposes extended reasoning. It accepts file, image, text input.

How does GPT-5.4 Nano score on benchmarks?

On LiveBench release 2026-06-25 (run: gpt-5.4-nano-xhigh), GPT-5.4 Nano scores 69.6 overall, ranking #45 of 55 benchmarked models.

What is the API model ID for GPT-5.4 Nano?

On OpenRouter the model ID is "openai/gpt-5.4-nano". It was listed on Mar 17, 2026.

More from openai

How these numbers are produced

  • Price and specs — provider list data from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
  • Scores and ranksLiveBench release 2026-06-25. Ranks count only models that have a published run; a blank means “not evaluated”, never “bad”.
  • Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.

Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.