o3-mini-high API pricing

Checked 12 Sept 2026 LLMs
$ per 1M input $1.10
$ per 1M output $4.40

Blended at 3:1 input to output: $1.93 per million tokens.

OpenRouter charges $1.10 per million input tokens and $4.40 per million output tokens. 3 of the models nearest it in price are cheaper on a blended basis.

$1.10
$/1M input
$4.40
$/1M output
$0.550
$/1M cached in
200,000
Context window
$145.20
1k req/day, monthly

Against the models nearest in price

Blended at a 3:1 input to output ratio.

Calculator →
o3-mini-high against comparable models — checked 12 Sept 2026
Source
o3-mini-high This model OpenRouter $1.10 $4.40 200,000 $1.93

Last checked . Methodology

Questions

How much does o3-mini-high cost per million tokens?

$1.10 per million input tokens and $4.40 per million output tokens, with cached input at $0.550. At a 3:1 input to output mix that blends to $1.93. Checked 12 Sept 2026.

What would o3-mini-high cost for a real workload?

A thousand requests a day at 2,000 input and 600 output tokens each comes to $145.20 a month.

What is the context window for o3-mini-high?

200,000 tokens of input, with up to 100,000 tokens of output.

o3-mini · o4-mini · o4-mini-high · claude-haiku-4-5 · claude-haiku-4.5 · All OpenRouter models · Cost calculator