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Models / OpenAI

GPT-5.4 nano

Deprecated

Snapshot alias gpt-5.4-nano-2026-03-17. Cheapest GPT-5.4-class model for high-volume classification/extraction/ranking/subagents. Reasoning effort none(default)/low/medium/high/xhigh. DEPRECATED 2026-10-01: OpenAI's deprecations page added the section "2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano" - "The following models are deprecated and will be removed from the API on April 1, 2027, with six months' notice. Migrate to the recommended replacements before the shutdown date." Table row: Apr 1, 2027 / gpt-5.4-nano / gpt-6-luna. The model page now carries a "Deprecated" badge on the model and on its dated snapshot gpt-5.4-nano-2026-03-17. The row is deprecated, not retired: the shutdown date is in the future and the model page still lists it with rates. Signal used: the dated deprecations-page section plus the model-page badge, both first-party; read 2026-10-03, two days after OpenAI's date.

GPT-5.4 nano by OpenAI costs $0.2 per 1M input tokens and $1.25 per 1M output tokens ($0.463/1M blended), with a 400K (400.000-token) context window. It is deprecated, shutting down 1 Apr 2027; the recommended replacement is GPT-6 Luna.

Last verified: 24 Oct 2026 · sourced from official provider documentation

Retires on 1 Apr 2027 · deprecated since 1 Oct 2026

Lifecycle warning

This model is deprecated. Recommended migration: GPT-6 Luna.

Read the GPT-5.4 nano migration guide → replacement & cheapest alternatives

Provider
OpenAI
Status
Deprecated
Input price
$0.2 / 1M tokens
Output price
$1.25 / 1M tokens
Cached input
$0.02 / 1M tokens
Blended price
$0.463 / 1M tokens
Context window
400.000 tokens (400K)
Max output
128.000 tokens
Modality
text, image
Open weights
No — API only
Knowledge cutoff
2025-08-31
Released
17 Mar 2026
API string
gpt-5.4-nano

Source: OpenAI official documentation ↗

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FAQ

GPT-5.4 nano — questions & answers

How much does GPT-5.4 nano cost?

GPT-5.4 nano is priced at $0.2 per 1M input tokens and $1.25 per 1M output tokens ($0.463/1M blended at a 3:1 input-to-output ratio), with cached input at $0.02 per 1M tokens.

What is the context window of GPT-5.4 nano?

GPT-5.4 nano has a 400.000-token context window (400K), with up to 128.000 output tokens per request.

Is GPT-5.4 nano being deprecated or retired?

GPT-5.4 nano is deprecated. Its scheduled shutdown date is 1 Apr 2027. The recommended migration is GPT-6 Luna.

Does GPT-5.4 nano support image or vision input?

Yes — GPT-5.4 nano accepts image input. Listed modalities: text, image.

Can I self-host GPT-5.4 nano?

No — GPT-5.4 nano is proprietary. Its weights are not publicly released, so it is available only through OpenAI's API (or hosted partners), not for self-hosting.

What is the API model string for GPT-5.4 nano?

The API model identifier for GPT-5.4 nano is "gpt-5.4-nano" when calling OpenAI's API.

What is GPT-5.4 nano's knowledge cutoff?

GPT-5.4 nano's training knowledge cutoff is 31 Aug 2025.