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OpenAI: OpenAI o1

o1

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OpenAI o1 costs $19.50 per million input tokens and $78.00 per million output tokens, supports 200K context, and is available through the OpenAI-compatible API.

Useful when tackling complex problems in science, coding, math, and similar fields. Outdated compared to the newer o3 and o4 models.

Modalities

Text → Text

Input / output price

$19.50 / $78.00 per 1M

Context

200K · max output 100K

Capabilities

Reasoning

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$19.50
Output$78.00
Cached input$9.75

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.1209
Per day
$60.45
Per month (30 days)
$1813.50

OpenAI o1: input $19.5/M · output $78/M · cached input $9.75/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "o1", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to o1.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "o1",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is OpenAI o1 billed?
Input is $19.50 and output is $78.00 per million tokens; cached input is $9.75. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
200K tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.
OpenAI o1 API pricing · GeniusRelay