openaiavailablesupports_function_callingsupports_native_streamingsupports_none_reasoning_effortsupports_parallel_function_callingsupports_pdf_inputsupports_prompt_cachingsupports_reasoningsupports_response_schemasupports_system_messagessupports_tool_choicesupports_visionsupports_web_searchsupports_xhigh_reasoning_effort

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OpenAIAvailable on AvalAI

GPT-5.6 Terra API on AvalAI

gpt-5.6-terra

GPT-5.6 Terra is an AI model from OpenAI that is available through AvalAI's OpenAI-compatible API.

Open dashboardCompare

Price display scale

Input price$2.00 / 1M tokens

Output price$12.00 / 1M tokens

Context window1,050,000 tokens

Maximum output128,000 tokens

Release date2026-07-09

Knowledge cutoff2026-02-16

Use GPT-5.6 Terra with the AvalAI API

Keep the API key in an environment variable and send requests from server-side code.

Bash

curl https://api.avalai.ir/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $AVALAI_API_KEY" \
  -d '{"model": "gpt-5.6-terra", "input": "Give a concise, practical solution."}'

Python

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AVALAI_API_KEY"],
    base_url="https://api.avalai.ir/v1",
)

response = client.responses.create(
    model="gpt-5.6-terra",
    input="Give a concise, practical solution.",
)

print(response.output_text)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.AVALAI_API_KEY,
  baseURL: "https://api.avalai.ir/v1",
});

const response = await client.responses.create({
  model: "gpt-5.6-terra",
  input: "Give a concise, practical solution.",
});

console.log(response.output_text);

Create an API keyRead the quickstart

Capabilities and endpoints

• function_calling
• native_streaming
• none_reasoning_effort
• parallel_function_calling
• pdf_input
• prompt_caching
• reasoning
• response_schema
• system_messages
• tool_choice
• vision
• web_search
• xhigh_reasoning_effort

Endpoints

• /v1/chat/completions
• /v1/batch
• /v1/responses

Third-party model parameters

Third-party reference data does not change AvalAI endpoint support; use the capabilities and endpoints above.

• include_reasoning
• max_completion_tokens
• max_tokens
• reasoning
• reasoning_effort
• response_format
• seed
• structured_outputs
• tool_choice
• tools

Supplemental reasoning effort values

high, low, max, medium, none, xhigh

GPT-5.6 Terra rate limits

Tier	RPM	TPM
0	1	10,000
1	50	500,000
2	150	2,000,000
3	250	4,000,000
4	1,500	8,000,000
5	10,000	20,000,000

AvalAI and reference marketplace pricing

Token role	AvalAI final price0% platform fee	OpenRouter cost breakdown
		Model rate	Credit purchase fee	Effective OpenRouter cost after fee
Input price	$2.00 / 1M tokens	$1.00 / 1M tokens	5.5%	$1.06 / 1M tokens
Input price (over 272,000 tokens)	$4.00 / 1M tokens	$2.00 / 1M tokens	5.5%	$2.11 / 1M tokens
Output price	$12.00 / 1M tokens	$6.00 / 1M tokens	5.5%	$6.33 / 1M tokens
Output price (over 272,000 tokens)	$18.00 / 1M tokens	$9.00 / 1M tokens	5.5%	$9.49 / 1M tokens

AvalAI pricing is final with a 0% platform fee. The effective OpenRouter prices add its 5.5% credit purchase fee to the highest reported model rate, including long-context tiers. OpenRouter charges a 5.5% fee when credits are purchased ($0.80 minimum), so small credit purchases can have a higher effective cost. OpenRouter FAQ

Peer benchmark performance

Independent, sourced scores with no composite rating.

Artificial Analysis Agentic Index

50.2index

Score	Peer rank	Direction	Source and date
50.2 index	2 / 3	Higher is better	OpenRouter · 2026-08-15

Artificial Analysis Coding Index

76.7index

Score	Peer rank	Direction	Source and date
76.7 index	2 / 3	Higher is better	OpenRouter · 2026-08-15

Artificial Analysis Intelligence Index

56.6index

Score	Peer rank	Direction	Source and date
56.6 index	2 / 3	Higher is better	OpenRouter · 2026-08-15

Third-party model data

Source: OpenRouter

Independent sources supplement this context; AvalAI remains authoritative for pricing, availability, and endpoint support.

Reviewed snapshot 2026-08-15

Provider count

—

Context window range

1,050,000

Maximum output range

128,000

OpenRouter model input rate range

$1 / 1M

OpenRouter model output rate range

$6 / 1M

OpenRouter fee

5.5% credit purchase fee · OpenRouter fee details

Effective input price range after fee

$1.055 / 1M

Effective output price range after fee

$6.33 / 1M

Related models

• GPT-5.6 Sol
• GPT-5.6 Luna
• GPT-5.5
• GPT-5.4 Pro

Frequently asked questions

What is the GPT-5.6 Terra API on AvalAI?

Create an AvalAI API key and send the model ID gpt-5.6-terra to one of the supported endpoints shown on this page.

How much does the GPT-5.6 Terra API cost on AvalAI?

The GPT-5.6 Terra API on AvalAI costs $2.00 per 1M input tokens and $12.00 per 1M output tokens.

What is the token cost for GPT-5.6 Terra?

Current AvalAI pricing for GPT-5.6 Terra is $2.00 / 1M tokens for input and $12.00 / 1M tokens for output.

What is the GPT-5.6 Terra context window?

The recorded maximum input context for GPT-5.6 Terra is 1,050,000 tokens.

Third-party data and freshness

• Pricing, availability, endpoints, and rate limits: AvalAI structured data (authoritative)
• OpenRouter marketplace · Last checked: 2026-08-15