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GPT-5.6 Terra
openai/gpt-5.6-terraGPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Context
1.1M tokens
Input, 1M tokens
$1.15
Output, 1M tokens
$6.9
Benchmark
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Uptime and speed
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Pricing
Charged from your prepaid balance for the tokens actually used.
Input tokens$1.15 per 1M tokens
Output tokens$6.9 per 1M tokens
Cache read$0.11 per 1M tokens
Cache write$1.44 per 1M tokens
Apps and activity
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Technical details
Model IDopenai/gpt-5.6-terra
Context window1.1M tokens
AcceptsFiles, Images, Text, pdf
ProducesText
TokenizerGPT
Max output tokens128,000
How to connect
The API is OpenAI-compatible: the official SDKs, LangChain and any client with a "base URL" field work.
import OpenAI from 'openai'
const client = new OpenAI({
baseURL: 'https://getmegabrain.com/api/gateway/v1',
apiKey: process.env.MEGABRAIN_API_KEY,
})
const response = await client.chat.completions.create({
model: 'openai/gpt-5.6-terra',
messages: [{ role: 'user', content: 'Hello!' }],
})Start using GPT-5.6 Terra
Create a free account, get a key in your dashboard and send your first request. Top up your balance when you need it.