GPT-4.1 nano
Default
Fastest, most cost-efficient version of GPT-4.1
Fastest, most cost-efficient version of GPT-4.1
Intelligence
Average
Speed
Very fast
Price
$0.1•$0.4
Input•Output
Input
Text, image
Output
Text
GPT-4.1 nano excels at instruction following and tool calling. It features a 1M token context window, and low latency without a reasoning step.
Note that we recommend starting with GPT-5 nano for more complex tasks.
1,047,576 context window
32,768 max output tokens
Jun 01, 2024 knowledge cutoff
Pricing
Pricing is based on the number of tokens used, or other metrics based on the model type. For tool-specific models, like search and computer use, there’s a fee per tool call. See details in the pricing page.
Text tokens
Per 1M tokens
∙
Batch API price
Input
$0.10
Cached input
$0.025
Output
$0.40
Quick comparison
Input
Cached input
Output
GPT-4.1 mini
$0.40
GPT-4.1 nano
$0.10
GPT-5 nano
$0.05
Modalities
Text
Input and output
Image
Input only
Audio
Not supported
Video
Not supported
Endpoints
Chat Completions
v1/chat/completions
Responses
v1/responses
Realtime
v1/realtime
Assistants
v1/assistants
Batch
v1/batch
Fine-tuning
v1/fine-tuning
Embeddings
v1/embeddings
Image generation
v1/images/generations
Videos
v1/videos
Image edit
v1/images/edits
Speech generation
v1/audio/speech
Transcription
v1/audio/transcriptions
Translation
v1/audio/translations
Moderation
v1/moderations
Completions (legacy)
v1/completions
Features
Streaming
Supported
Function calling
Supported
Structured outputs
Supported
Fine-tuning
Supported
Distillation
Not supported
Predicted outputs
Supported
Snapshots
Snapshots let you lock in a specific version of the model so that performance and behavior remain consistent. Below is a list of all available snapshots and aliases for GPT-4.1 nano.
gpt-4.1-nano
gpt-4.1-nano-2025-04-14
gpt-4.1-nano-2025-04-14
Rate limits
Rate limits ensure fair and reliable access to the API by placing specific caps on requests or tokens used within a given time period. Your usage tier determines how high these limits are set and automatically increases as you send more requests and spend more on the API.
| Tier | RPM | RPD | TPM | Batch queue limit |
|---|---|---|---|---|
| Free | Not supported | |||
| Tier 1 | 500 | 10,000 | 200,000 | 2,000,000 |
| Tier 2 | 5,000 | - | 2,000,000 | 20,000,000 |
| Tier 3 | 5,000 | - | 4,000,000 | 40,000,000 |
| Tier 4 | 10,000 | - | 10,000,000 | 1,000,000,000 |
| Tier 5 | 30,000 | - | 150,000,000 | 15,000,000,000 |