All OpenAI models

o3

OpenAI · released April 2025

o3 is a OpenAI model with a 200K token context window — about 290 pages of text. It reads Images, Text, and Files and replies in Text. It can show its reasoning before it answers.

$2.30

input / 1M tokens

$9.20

output / 1M tokens

200K

context — about 290 pages

1.9¢

a client proposal

Pricing

Input
$2.30 per million tokens
Output
$9.20 per million tokens
Cached input
$0.575 per million tokens
Web search
1.1¢ per search

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
OpenAI
Released
April 2025 (2025-04-16)
Context window
200K tokens — about 290 pages
Max output
100K tokens per reply
Input
Images, Text, and Files
Output
Text
Reasoning
Shows its thinking before answering
Knowledge cutoff
2024-06-30

Cost vs Token Amount

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80% Input20% Output
free$1.84$3.680 tokens250k500k750k1000k
o3

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What a task costs

2K tokens in · 500 tokens out.

o3

OpenAI

0.92¢

for this task

50% input · 50% output

Full pricing →

Your $5 welcome credit covers about 543 of these.

Compare o3

Closest in price on a typical task:

o3 vs GPT-4.1 →o3 vs Jamba Large 1.7 →o3 vs Sonar Deep Research →o3 vs Sonar Reasoning Pro →Any other combination →

Questions, answered

How much does o3 cost on Alyph?

o3 costs $2.30 per million input tokens and $9.20 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 1.9¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is o3's context window?

200K tokens — about 290 pages. Replies can be up to 100K tokens long.

Can o3 read images and files?

o3 reads Images, Text, and Files. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does o3 show its reasoning?

Yes. o3 can expose its thinking before the final answer, so you can watch how it got there.

Test o3 against GPT-4.1

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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