What is the context window of OpenAI o3 by NanoGPT?

OpenAI o3 by NanoGPT has a context window of 200K tokens. It supports up to 200K input tokens and can generate up to 100K output tokens.

What input and output types does OpenAI o3 support?

OpenAI o3 by NanoGPT accepts text as input and can generate text as output.

Is OpenAI o3 by NanoGPT open source?

No, OpenAI o3 by NanoGPT has closed weights. The model is only available through the NanoGPT API.

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OpenAI o3 API

NanoGPT

About

Process massive datasets with OpenAI o3, featuring an expansive 200K context window for long-document analysis. This model delivers cost-effective pricing at $2.00/1M input and $8.00/1M output tokens. Access OpenAI o3 via the NanoGPT API with up to 100K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text

Reasoning

Structured Output

Tool Use

WeightsClosed

Temperature

Fixed

Attachment

Not Supported

Limits

Context Window

200K

Tokens

Input Limit

200K

Tokens

Max Output

100K

Tokens

Pricing

Standard (per 1M tokens)

Input

$2.00

Output

$8.00

Frequently Asked Questions

OpenAI o3 by NanoGPT costs $2.00 per 1M input tokens and $8.00 per 1M output tokens.

Model Details

openai/o3

Provider

NanoGPT

Family

Release Date

Apr 16, 2025

Knowledge Cutoff

N/A

API Integration

NPM Package

@ai-sdk/openai-compatible

Environment Variables

NANO_GPT_API_KEY

API Base URL

https://nano-gpt.com/api/v1

Documentation