OpenAI · MultimodalReleased 2025-04-16

o3

openai/o3 id

OpenAI's o3 is their most powerful reasoning model, setting new state-of-the-art benchmarks in coding, math, science, and visual perception. It excels at complex queries requiring multi-faceted analysis, with particular strength in analyzing images, charts, and graphics.

Tool useReasoningChat

Type

Use o3

# Drop-in OpenAI-compatible client
$ import { generateText } from 'ai'
$ 
$ const { text } = await generateText({
$   model: 'openai/o3',
$   baseURL: 'https://synapse.garden/api/v1',
$   apiKey: process.env.MG_KEY,
$   prompt: 'Why is the sky blue?',
$ })

200K

CONTEXT WINDOW

100K

MAX OUTPUT

$2.20/M

INPUT · PER M

$8.80/M

OUTPUT · PER M

PRICING

List prices, every modality.

Rate	Per million tokens · USD
Input	$2.20/M
Output	$8.80/M
Cache read	$0.550/M

Honest list pricesHow we calculate prices

Other OpenAI models

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Model

Input

Output

Context

Type

FAQ · O3

Frequently asked

01 / 04

How do I call o3 from my code?

Use the OpenAI or Anthropic SDK and point baseURL at https://synapse.garden/api/v1. Set model: ‘openai/o3’ and supply your Synapse Garden API key. No code changes beyond the base URL.

02 / 04

How much does o3 cost?

Input: $2.20/M per million tokens. Output: $8.80/M per million tokens. The free tier includes a million tokens every month at no cost.

03 / 04

What's the context window for o3?

o3 supports a context window of 200K tokens, with a maximum output of 100K tokens.

04 / 04

Do I need a separate Anthropic or OpenAI account?

No. Synapse Garden is the single API surface — one key gives you OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, xAI, Cohere, and more. Billing, rate limits, and audit logs are unified.

READY

Try o3 in three minutes.

Sign up, create a key, drop our base URL into your existing client. The free tier includes a million tokens every month — no credit card.

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