MODELS / OPENAI

GPT-6.1 Terra

GPT-6.1 Terra is OpenAI’s model for visual reasoning, precise computer use, and natural writing. It accepts text and images and generates text, with configurable reasoning effort, structured outputs, tool calling through the Responses API, and implicit and explicit prompt…

START BUILDING COMPARE

TEXTREASONINGEXPLICIT-CACHINGFASTFILE-INPUTIMPLICIT-CACHINGSTRUCTURED-OUTPUTTOOL-USEVISIONWEB-SEARCH

1.1M

CONTEXT WINDOW

128K

MAX OUTPUT TOKENS

INPUT PRICE / 1M TOKENS

OUTPUT PRICE / 1M TOKENS

QUICKSTART

PROTOCOL:: OPENAI COMPATIBLE
STREAMING:: SUPPORTED

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/openai/gpt-6.1-terra",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ.get("BLACKBOX_API_KEY"),
    base_url="https://enterprise.blackbox.ai/v1",
)

stream = client.chat.completions.create(
    model="blackboxai/openai/gpt-6.1-terra",
    messages=[{"role": "user", "content": "Hello!"}],
    stream=True,
)

for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="", flush=True)

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: process.env.BLACKBOX_API_KEY,
  baseURL: 'https://enterprise.blackbox.ai/v1',
});

const stream = await client.chat.completions.create({
  model: 'blackboxai/openai/gpt-6.1-terra',
  messages: [{ role: 'user', content: 'Hello!' }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content || '');
}

SPECIFICATIONS

CONTEXT:: 1.1M
PROVIDER:: OPENAI
TYPE:: TEXT

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything GPT-6.1 Terra supports, in one table.

MODEL ID: blackboxai/openai/gpt-6.1-terra
DEVELOPED BY: OpenAI
MODEL TYPE: Text
RELEASED: Oct 26, 2026
CONTEXT WINDOW: 1.1M
MAX OUTPUT TOKENS: 128K
INPUT MODALITIES: text, image, pdf
OUTPUT MODALITIES: text
INPUT PRICE: $1 / 1M tokens
OUTPUT PRICE: $5 / 1M tokens
INPUT PRICE (>200K): $2 / 1M tokens
CACHE READ: $0.05 / 1M tokens
CACHE WRITE: $1.25 / 1M tokens
REASONING: Supported
DATA RETENTION: Standard retention
DEDICATED DEPLOYMENT: Not available (closed-weight model)
SUPPORTED PARAMETERS: max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoningresponse_formatstructured_outputs

MODELS:: 3

Also worth a look.

OPENAI

GPT 5.1 Codex Max

400K context · $1.25 / 1M tokens input · $10 / 1M tokens output

OPENAI

GPT 5.1 Codex Mini

400K context · $0.25 / 1M tokens input · $2 / 1M tokens output

OPENAI

GPT 5.1 Thinking

400K context · $1.25 / 1M tokens input · $10 / 1M tokens output