GPT-5.4 nano
Summary
GPT-5.4 nano is a proprietary language model from OpenAI, released on 17 Mar 2026. It accepts text and images and generates text, with a 400K-token context window and up to 128K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.20 per million input tokens and $1.25 per million output tokens (OpenAI API), across 5 providers we track.
Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | OpenAI |
|---|---|
| Release date | 17 Mar 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 400K (400,000 tokens) [models.dev] |
| Max output | 128K tokens [models.dev] |
| Knowledge cutoff | 31 Aug 2025 [models.dev] |
| Input | Text and images [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
GPT-5.4 nano API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenAI API gpt-5.4-nano | $0.20 | $1.25 | $0.02 | 400K | models.dev, 4 Oct 2026 |
| Databricks databricks-gpt-5-4-nano | $0.20 | $1.25 | $0.02 | 400K | models.dev, 4 Oct 2026 |
| Azure AI Foundry gpt-5.4-nano | $0.20 | $1.25 | $0.02 | 400K | models.dev, 4 Oct 2026 |
| Vercel AI Gateway openai/gpt-5.4-nano | $0.20 | $1.25 | $0.02 | 400K | models.dev, 4 Oct 2026 |
| OpenRouter openai/gpt-5.4-nano | $0.20 | $1.25 | $0.02 | 400K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of GPT-5.4 nano?
GPT-5.4 nano has a context window of 400,000 tokens (400K) and can generate up to 128,000 tokens in a single response, according to models.dev.
How much does the GPT-5.4 nano API cost?
Through OpenAI API, GPT-5.4 nano costs $0.20 per million input tokens and $1.25 per million output tokens. Prices last verified 4 Oct 2026.
Is GPT-5.4 nano open source?
No. GPT-5.4 nano is a proprietary model; OpenAI has not released its weights. It is available through APIs including OpenAI API, Databricks, Azure AI Foundry, Vercel AI Gateway.
When was GPT-5.4 nano released?
OpenAI released GPT-5.4 nano on 17 Mar 2026, according to models.dev.
Which providers offer GPT-5.4 nano?
We track GPT-5.4 nano on 5 providers: OpenAI API, Databricks, Azure AI Foundry, Vercel AI Gateway, OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.
Sources
- https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5.4-nano.toml
- https://github.com/sst/models.dev/blob/dev/providers/databricks/models/databricks-gpt-5-4-nano.toml
- https://github.com/sst/models.dev/blob/dev/providers/azure/models/gpt-5.4-nano.toml
- https://github.com/sst/models.dev/blob/dev/providers/vercel/models/openai/gpt-5.4-nano.toml
- https://openrouter.ai/openai/gpt-5.4-nano