OpenAI · Pricing

GPT-4.1 pricing

Complete GPT-4.1 API cost reference: $2/M input, $8/M output, 1.0M token context window, $1/M cached reads. Verified against official sources.

Prices verified August 20, 2026
GPT-4.1
Input / M
$2
Output / M
$8
Cache read
$1
Cache write
$3
Context
1.0M
Batch
−50%
Vision
Yes
Reasoning

What GPT-4.1 costs in practice

WorkloadCost / callCost @ 1K req/day
Light · 1K in / 300 out$0.0044$133.92/mo
Standard · 10K in / 2K out$0.0360$1095.75/mo
Heavy · 100K in / 20K out$0.3600$10957.50/mo

Estimates assume medium reasoning effort, no batch discounts and no prompt caching. Turn on prompt caching and the input side typically drops 50–90% — run your own mix in the free calculator preloaded with GPT-4.1.

About this page

Prices were last verified on August 20, 2026 against OpenAI's official pricing page. Providers reprice frequently — see our methodology for exactly how estimates are computed, and always confirm final rates with the provider before budgeting.

GPT-4.1 FAQ

How much does GPT-4.1 cost?

GPT-4.1 charges $2 per million input tokens and $8 per million output tokens, with cached input reads at $1/M. Batch mode cuts both rates by 50% for asynchronous workloads.

What is the context window of GPT-4.1?

GPT-4.1 supports a context window of 1,047,576 tokens (1.0M) — roughly 785,682 English words or about 1,571 pages of text in a single request.

Does GPT-4.1 support images, audio or reasoning?

GPT-4.1 offers vision & image understanding. Current production recommendation. 1M context, 50% batch, cached input up to 90% off.

How do I estimate my GPT-4.1 bill?

A typical workload of 10K input and 2K output tokens costs about $0.0360 per call with GPT-4.1. At 1,000 requests per day that is roughly $1095.75 per month. Use the free AITokenCalculator to run your exact numbers.