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OpenAI: GPT-4.1 Nano

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. $0.10 per million input tokens, $0.40 per million output tokens. 1,047,576 token context window. Higher uptime with 2 providers. Includes independent benchmarks from Artificial Analysis.

View source on OpenRouter
Overview

Model specifications

Context
1,047,576 tokens
Maximum output
32,768 tokens
Architecture
text+image+file->text
Tokenizer
GPT
Knowledge cutoff
2024-06-30
Moderated
Yes
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$0.1
/M tokens
Output
$0.4
/M tokens
Cache read
$0.03
/M tokens
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-4.1-nano","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
imagetextfile
Output
text
API

Supported API parameters

max_completion_tokensmax_tokensresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p
Available providers

3 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Azure

unknown
Context
1.0M
Maximum output
943K
Input
$0.100
Output
$0.400
Cache read
$0.030
Cache write
Not provided

OpenAI

unknown
Context
1.0M
Maximum output
33K
Input
$0.100
Output
$0.400
Cache read
$0.025
Cache write
Not provided

Azure

unknown
Context
1.0M
Maximum output
943K
Input
$0.110
Output
$0.440
Cache read
$0.033
Cache write
Not provided
openai

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Context
Not provided
Input
audio
Output
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OpenAI: GPT-5.6 Luna Pro

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Context
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Input
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Output
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Input: $0.200Output: $1.20per 1M tokens
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OpenAI: GPT-5.6 Luna

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...

Context
1.1M
Input
file · image · text
Output
text
Input: $0.200Output: $1.20per 1M tokens
View model details →
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OpenAI: GPT-5.6 Terra Pro

GPT-5.6 Terra Pro is the same underlying model as GPT-5.6 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Context
1.1M
Input
file · image · text
Output
text
Input: $2.00Output: $12.00per 1M tokens
View model details →