openaiavailablesupports_function_callingsupports_minimal_reasoning_effortsupports_native_streamingsupports_parallel_function_callingsupports_pdf_inputsupports_prompt_cachingsupports_reasoningsupports_response_schemasupports_system_messagessupports_tool_choicesupports_visionsupports_web_search

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OpenAIAvailable on AvalAI

GPT-5 Nano API on AvalAI

gpt-5-nano

GPT-5 Nano is an AI model from OpenAI that is available through AvalAI's OpenAI-compatible API.

Open dashboardCompare

Price display scale

Input price$0.05 / 1M tokens

Output price$0.40 / 1M tokens

Context window272,000 tokens

Maximum output128,000 tokens

Release date2025-08-07

Knowledge cutoff2024-05-31

Use GPT-5 Nano 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-nano", "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-nano",
    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-nano",
  input: "Give a concise, practical solution.",
});

console.log(response.output_text);

Create an API keyRead the quickstart

Capabilities and endpoints

• Function calling
• Minimal reasoning effort
• Streaming
• Parallel function calling
• PDF input
• Prompt caching
• Reasoning
• Structured output
• System messages
• Tool choice
• Vision
• Web search

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, medium, minimal

GPT-5 Nano rate limits

Tier	RPM	TPM
Basic	1	40,000
Tier 1	250	450,000
Tier 2	500	800,000
Tier 3	750	4,000,000
Tier 4	1,500	10,000,000
Tier 5	2,500	30,000,000

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	$0.05 / 1M tokens	$0.05 / 1M tokens	5.5%	$0.05 / 1M tokens
Output price	$0.40 / 1M tokens	$0.40 / 1M tokens	5.5%	$0.42 / 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

Third-party model data

Source: OpenRouter

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

Reviewed snapshot 2026-07-31 · This snapshot was checked more than 14 days ago.

Provider count

—

Context window range

400,000

Maximum output range

128,000

OpenRouter model input rate range

$0.05 / 1M

OpenRouter model output rate range

$0.4 / 1M

OpenRouter fee

5.5% credit purchase fee · OpenRouter fee details

Effective input price range after fee

$0.0527 / 1M

Effective output price range after fee

$0.422 / 1M

Related models

• gpt-5-nano-2025-08-07
• gpt-5-pro-2025-10-06
• GPT-5 Pro
• gpt-5-mini-2025-08-07

Frequently asked questions

What is the GPT-5 Nano API on AvalAI?

Create an AvalAI API key and send the model ID gpt-5-nano to one of the supported endpoints shown on this page.

How much does the GPT-5 Nano API cost on AvalAI?

The GPT-5 Nano API on AvalAI costs $0.05 per 1M input tokens and $0.40 per 1M output tokens.

What is the token cost for GPT-5 Nano?

Current AvalAI pricing for GPT-5 Nano is $0.05 / 1M tokens for input and $0.40 / 1M tokens for output.

What is the GPT-5 Nano context window?

The recorded maximum input context for GPT-5 Nano is 272,000 tokens.

What are the rate limits for GPT-5 Nano on AvalAI?

On tier 5, GPT-5 Nano on AvalAI supports up to 2,500 requests per minute and 30,000,000 tokens per minute.

What features does GPT-5 Nano support on AvalAI?

GPT-5 Nano on AvalAI supports Function calling, Minimal reasoning effort, Streaming, Parallel function calling, PDF input, Prompt caching, Reasoning, Structured output, System messages, Tool choice, Vision, Web search.

What account tier is required to use GPT-5 Nano on AvalAI?

Calling GPT-5 Nano on AvalAI requires the Basic tier (tier 0) or higher.

Third-party data and freshness

• Pricing, availability, endpoints, and rate limits: AvalAI structured data (authoritative)
• OpenRouter marketplace · Last checked: 2026-07-31