whichllm — Browse and compare AI model specs and pricing

NanoGPT

GPT 4.1 model ID, context window & pricing

gpt

Quick facts

Model ID openai/gpt-4.1
Source NanoGPT
Context Window 1047576
Pricing $2.00 input / $8.00 output per 1M tokens
Capabilities tool calling, structured output

Model overview

GPT 4.1 is an AI model from NanoGPT with 1047576 token context window and text, image, pdf input support.

Published pricing is $2.00 input and $8.00 output per 1M tokens.

  • Workloads that use text, image, pdf inputs with text outputs.
  • Agent and tool workflows that need function calling.
Model ID openai/gpt-4.1
Provider NanoGPT
Family gpt
Status -
Knowledge Cutoff -
Release Date 2025-09-10
Input Modalities text, image, pdf
Output Modalities text
Context Window 1047576
Input Limit 1047576
Output Limit 32768
Tool Calling Yes
Reasoning No
Structured Output Yes
Temperature Control -
Open Weights No
Input Cost / 1M tokens $2.00
Output Cost / 1M tokens $8.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -