When does gpt-4.1-nano shut down on the OpenAI API?

On October 23, 2026, according to developers.openai.com.

What replaces gpt-4.1-nano?

The named replacement is gpt-5.6-luna. It is the provider's named replacement, not our recommendation.

How does the price change?

On the OpenAI API, moving from gpt-4.1-nano to gpt-5.6-luna goes from $0.10 to $0.20 per 1M input tokens and from $0.40 to $1.20 per 1M output tokens (list prices). On a mix of 3 input tokens to 1 output token, that is +157%.

OpenAI retires gpt-4.1-nano on Oct 23, 2026: replacement and cost

OpenAI APIShutdown

Date: Oct 23, 2026
Model: gpt-4.1-nano
Named replacement: gpt-5.6-luna
Maker: OpenAI

OpenAI's deprecation table lists the snapshot gpt-4.1-nano-2025-04-14 on this row.

Price before and after

Per 1M tokens	Before (gpt-4.1-nano)	After (gpt-5.6-luna)
Input	$0.10	$0.20
Output	$0.40	$1.20
Cached input	$0.025	$0.02
Blended (3 in : 1 out)	$0.175	$0.45 (+157%)

List prices, USD. Blended = (3 × input + 1 × output) ÷ 4 — a stated reference mix, not your workload. Prices: developers.openai.com, checked Sep 29, 2026.

Source

“October 23, 2026 gpt-4.1-nano | gpt-4.1-nano-2025-04-14 gpt-5.6-luna”

https://developers.openai.com/api/docs/deprecations · checked Sep 29, 2026

Same model on other routes

Azure (Microsoft Foundry): gpt-4.1-nano (version 2025-04-14) — shutdown Oct 14, 2026, replacement none named

What it does to your bill

Prefilled with gpt-4.1-nano. Change the tokens, or add the other models you use.

Example workload — replace with yours.

ModelInput tokens / mo (M)Output tokens / mo (M)% cached inputAfter Oct 23, 2026

Retiring snapshot; price from the provider's pricing page.

Up to 8 models. Find your monthly token counts on the OpenAI usage dashboard or Claude Console usage.

Output tokens after a migration: 0%Newer models can produce more or fewer tokens for the same task. We assume the same count unless you change this.Monthly cloud bill (AWS/Azure/GCP), optional

From announced changes alone, this workload goes from $26/mo in Oct 2026 to $44/mo in Mar 2027 (+72.2%).

Month-by-month table

Month	Cost
Oct 2026	$25.55
Nov 2026	$44.00
Dec 2026	$44.00
Jan 2027	$44.00
Feb 2027	$44.00
Mar 2027	$44.00

Change in monthly cost per announced event
#	Date	Change	$/mo change	Source
1	Oct 23, 2026	gpt-4.1-nano → gpt-5.6-luna	+$26.00	developers.openai.com

The replacement is the provider's named replacement, not our recommendation; quality and behavior can differ.

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<iframe src="https://cloud.cloudquell.com/llm/price-calendar/embed/openai-2026-10-23-gpt-4-1-nano/" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="gpt-4.1-nano — AI API price calendar"></iframe>
<p><a href="https://cloud.cloudquell.com/llm/price-calendar/openai-2026-10-23-gpt-4-1-nano/">gpt-4.1-nano: shutdown Oct 23, 2026</a> — CloudQuell AI API price calendar</p>

Methodology and limits

Prices are list prices in USD per 1M tokens from the provider's pricing page; dates and named replacements come from the provider's deprecation page, quoted above with the date we last checked. The replacement is the provider's named replacement, not our recommendation — quality and behavior can differ. Discounts, committed-use or enterprise agreements, batch and regional pricing, and Azure OpenAI and Amazon Bedrock prices are not included. Dates marked "at least through" or "not before" are shown but never applied.Full methodology →

See this change on the full calendar →