GPT-6.1 Sol

GPT-6.1 Sol is OpenAI's upgrade to GPT-6 Sol, positioned below the flagship GPT-6 Astra in the GPT-6 series. OpenAI GPT-6.1 Cost-Efficient High-End, with a 1.1M token context window.

POST/v1/ai/chat

$0.01/call

Overview

GPT-6.1 Sol is OpenAI's upgrade to GPT-6 Sol, positioned below the flagship GPT-6 Astra in the GPT-6 series. OpenAI GPT-6.1 Cost-Efficient High-End, with a 1.1M token context window.

Property	Value
Model ID	`openai/gpt-6.1-sol`
Context Window	1,050,000 tokens
Max Output	128,000 tokens
Input Price	$2.95 / 1M tokens
Output Price	$14.77 / 1M tokens

Usage

const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    model: 'openai/gpt-6.1-sol',
    messages: [{ role: 'user', content: "Read this incident timeline and write the root-cause section of a postmortem." }],
  }),
});
const { data } = await res.json();
console.log(data.message.content);

curl -X POST https://api.yepapi.com/v1/ai/chat \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-6.1-sol", "messages": [{"role": "user", "content": "Read this incident timeline and write the root-cause section of a postmortem."}]}'

Request Body

Parameter	Type	Required	Description	Default
`model`	`string`	Yes	Model ID (e.g. `openai/gpt-6.1-sol`)	—
`messages`	`Message[]`	Yes	Array of `{ role, content }` objects	—
`maxTokens`	`number`	No	Maximum tokens in the response	Model default
`temperature`	`number`	No	Sampling temperature (0.0–2.0)	`1.0`
`topP`	`number`	No	Nucleus sampling threshold	`1.0`
`frequencyPenalty`	`number`	No	Penalize repeated tokens	`0`
`presencePenalty`	`number`	No	Penalize tokens already present	`0`
`stream`	`boolean`	No	Enable SSE streaming	`false`

Info

All AI models use the /v1/ai/chat endpoint. Specify the model with the model field.

Response

{
  "ok": true,
  "data": {
    "model": "openai/gpt-6.1-sol",
    "message": {
      "role": "assistant",
      "content": "Root cause: a config change raised the connection pool limit above what the database allowed, so under peak load new connections were refused and requests queued until they timed out. The change passed review because the limit was not validated against the database setting."
    },
    "usage": {
      "promptTokens": 24,
      "completionTokens": 180,
      "totalTokens": 204
    }
  }
}

Streaming

Set "stream": true to receive Server-Sent Events. Each chunk contains a delta object:

data: {"delta":{"content":"Root"},"model":"openai/gpt-6.1-sol","index":0}
data: [DONE]

Under the Hood

We handle auth, billing, and response normalization — you just send messages.