o4-mini

o4-mini costs $1.10 per 1M input tokens, $0.275 cached input and $4.40 per 1M output tokens. Batch API: $0.55 input, $2.20 output.

Updated October 14, 2026

Input / 1M

$1.10

Output / 1M

$4.40

Cached Input

$0.275

Context Window

200K

Standard Input

$1.10 / 1M

Base prompt input rate

Standard Output

$4.40 / 1M

Completion output rate

Prompt Caching -50%

$0.275 / 1M

Cached prompt context

Batch API -50%

$0.55 / 1M

Asynchronous 24h batch

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OpenAI retires o4-mini on 23 Oct 2026. Successor: gpt-5.6-terra.

Flagship models

All rates listed in USD per 1 Million (1M) tokens unless noted

StandardBatchFlexFast mode

Pricing Metric / Parameter	Standard RATE (per 1M)	Batch RATE (per 1M)	Flex RATE (per 1M)	Fast mode RATE (per 1M)
Short context input	$1.10	$0.55	$0.55	$2.00
Short context cached input	$0.275	-	$0.138	$0.50
Short context cache writes	-	-	-	-
Short context output	$4.40	$2.20	$2.20	$8.00
Long context input	-	-	-	-
Long context cached input	-	-	-	-
Long context cache writes	-	-	-	-
Long context output	-	-	-	-

Source: OpenAI official pricing page, verified 2026-10-14. Prices in USD per 1M tokens.

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