LLM Reference

GPT-5.4 Models by OpenAI

OpenAIProprietary
6 models2026Up to 1.05m ctxFrom $0.2/1M input

Details

ResearcherOpenAI
LicenseProprietary
Commercial useCommercial use: conditional
Models6
Released2026
Max context1.05m

Capabilities

Vision5 of 6 models
Multimodal5 of 6 models
Reasoning4 of 6 models
Function Calling5 of 6 models
Tool Use5 of 6 models
Structured Outputs5 of 6 models
Code Execution5 of 6 models

Links

Website

About

GPT-5.4 is OpenAI's frontier reasoning model family, designed for complex real-world tasks including spreadsheet editing, frontend code generation, document understanding, image analysis, tool use, and deep web research. Released March 5, 2026, as the successor to GPT-5.2 and GPT-5.3-Codex. The family includes full, mini, nano, and cybersecurity-specialized variants.

Current Variants

Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.

5 in view1 retired

Use when the workload needs cybersecurity, reasoning, and multimodal inputs.

2026-04cybersecurityreasoningmultimodal inputs
GPT-5.4Current

Use when the workload needs 1.05m context, reasoning, and tool use.

2026-031.05m contextreasoningtool use

Use when the workload needs 400k context, reasoning, and tool use.

2026-03400k contextreasoningtool use

Use when the workload needs 400k context, tool use, and function calling.

2026-03400k contexttool usefunction calling

Use when the workload needs 1.05m context, reasoning, and tool use.

2026-031.05m contextreasoningtool use

Release Timeline

3 release groups
2026-04
1 current
GPT-5.4-Cyber
cybersecurityreasoningmultimodal inputs
Current
2026-03
4 current
GPT-5.4
1.05m contextreasoningtool use
Current
GPT-5.4 Mini
400k contextreasoningtool use
Current
GPT-5.4 Nano
400k contexttool usefunction calling
Current
GPT-5.4 Pro
1.05m contextreasoningtool use
Current
2026-02
1 retired
GPT-5.3-Codex-Spark
code131k contexttool use
Replaced

Replaced By

Keep for legacy integrations; evaluate GPT-5.3-Codex before new work.

Specifications(6 models)

GPT-5.4 model specifications comparison
ModelReleasedContextVisionMultimodalReasoningFn CallingTool UseStructured OutputsCode Exec
GPT-5.4-Cyber2026-04YesYesYesNoNoNoNo
GPT-5.42026-031.05mYesYesYesYesYesYesYes
GPT-5.4 Mini2026-03400kYesYesYesYesYesYesYes
GPT-5.4 Nano2026-03400kYesYesNoYesYesYesYes
GPT-5.4 Pro2026-031.05mYesYesYesYesYesYesYes

Pricing

GPT-5.4 model pricing by provider
ModelProviderInput / 1MOutput / 1MType
GPT-5.4 NanoOpenAI API$0.2$1.25Serverless
GPT-5.4 NanoOpenRouter$0.2$1.25Serverless
GPT-5.4 NanoVercel AI Gateway$0.2$1.25Serverless
GPT-5.4 MiniOpenAI API$0.75$4.5Serverless
GPT-5.4 MiniOpenRouter$0.75$4.5Serverless
GPT-5.4 MiniVercel AI Gateway$0.75$4.5Serverless
GPT-5.4OpenAI API$2.5$15Serverless
GPT-5.4OpenRouter$2.5$15Serverless
GPT-5.4Vercel AI Gateway$2.5$15Serverless
GPT-5.4AWS Bedrock$2.75$16.5Serverless
GPT-5.4 ProOpenRouter$30$180Serverless
GPT-5.4 ProOpenAI API$30$180Serverless
GPT-5.4 ProVercel AI Gateway$30$180Serverless

Popular comparisons in this family

Frequently Asked Questions

What is GPT-5.4 used for?
GPT-5.4 is used for cybersecurity, code, and vision and multimodal work. The family description and listed model capabilities point to those workloads as the best fit.
How does GPT-5.4 compare to GPT Realtime 2?
GPT-5.4 by OpenAI is strongest where you need cybersecurity, while GPT Realtime 2 by OpenAI is the closest related family to check for realtime voice. GPT-5.4 has 6 listed variants and reaches up to 1.05m context, while GPT Realtime 2 reaches up to 131k context, so compare the specs and pricing tables before choosing a production model.
Which GPT-5.4 model should I use?
For the lowest listed input price, start with GPT-5.4 Nano through OpenAI API at $0.2/1M input tokens. For the most capable/latest local choice, evaluate GPT-5.4 with 1.05m context and reasoning, tool use, function calling, structured outputs, and multimodal inputs.