How much does OpenAI: GPT-5.4 cost per 1M tokens?

OpenAI: GPT-5.4 costs $2.50 per 1M input tokens and $15.00 per 1M output tokens on the standard tier. Cached input is $0.250 per 1M.

What is OpenAI: GPT-5.4's context window?

OpenAI: GPT-5.4 accepts up to 1,050,000 tokens in a single request, and can return up to 128,000 output tokens.

Is there a cheaper OpenRouter model than OpenAI: GPT-5.4?

Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.50 for OpenAI: GPT-5.4, with a 16,385 token context window.

Where does this OpenAI: GPT-5.4 price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

OpenAI: GPT-5.4 pricing

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support… OpenAI: GPT-5.4 from OpenRouter costs $2.50 per 1M input tokens and $15.00 per 1M output tokens. Cached input is $0.250 per 1M. Context window 1,050,000 tokens.

API id openai/gpt-5.4 · OpenRouter · source · updated 2026-09-25 · general-purpose

$2.50

Input / 1M tokens

$15.00

Output / 1M tokens

$0.250

Cached input / 1M

1.1M

Context window

OpenAI: GPT-5.4 specifications

Provider: OpenRouter
API id: openai/gpt-5.4
Model type: general-purpose
Context window: 1.1M tokens
Max output: 128K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

gpt-5.4 across providers

The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.

Provider	Input /1M	Cached /1M	Output /1M	1M in + 1M out	vs vendor
OpenAIVendorCheapest	$2.50	$0.250	$15.00	$17.50	—
OpenRouterHostviewing	$2.50	$0.250	$15.00	$17.50	—

What OpenAI: GPT-5.4 costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.01
Document summary	50,000	2,000	$0.15
1M tokens in, 200K out	1,000,000	200,000	$5.50

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does OpenAI: GPT-5.4 cost per 1M tokens?: OpenAI: GPT-5.4 costs $2.50 per 1M input tokens and $15.00 per 1M output tokens on the standard tier. Cached input is $0.250 per 1M.
What is OpenAI: GPT-5.4's context window?: OpenAI: GPT-5.4 accepts up to 1,050,000 tokens in a single request, and can return up to 128,000 output tokens.
Is there a cheaper OpenRouter model than OpenAI: GPT-5.4?: Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.50 for OpenAI: GPT-5.4, with a 16,385 token context window.
Where does this OpenAI: GPT-5.4 price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Compare OpenAI: GPT-5.4 with another model →

Other OpenRouter models

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