OpenAI: GPT-5.4 Mini

OpenAI: GPT-5.4 Mini is a large language model from OpenAI. It costs $0.750 per million input tokens and $4.50 per million output tokens. Its context window is 400K tokens.

ReasoningTool callingStructured outputPrompt cachingBatch tierfile inputimage input

Input / 1M tokens: $0.750
Output / 1M tokens: $4.50
Cached input / 1M: $0.075
Context window: 400K

This model also charges $0.01 per search request

That is $10.00 per 1,000 requests, billed on top of the token prices above. On a typical 1,000-in / 500-out exchange the tokens cost $0.003, so the search fee is 3.3× the token cost. Per-token rankings elsewhere ignore this entirely.

Who serves it cheapest

2 hosts serve GPT-5.4 Mini. Same weights, same API - the price difference is pure margin and routing.

Providers serving OpenAI: GPT-5.4 Mini, cheapest first
Provider	Input / 1M	Output / 1M	Context	Throughput	Uptime 24h
OpenAICheapest	$0.375	$2.25	400K	-	100.0%
Azure	$0.750	$4.50	400K	-	100.0%

The spread between OpenAI and Azure is 2.0× for identical weights. Quantization and context limits differ, so check both columns before switching.

Benchmarks

Independent scores published alongside the catalogue.

Coding index: 56.1
Agentic index: 17.9

About GPT-5.4 Mini

GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong performance across reasoning, coding,...

Specifications

OpenAI: GPT-5.4 Mini specifications
Model ID	`openai/gpt-5.4-mini`
Provider	OpenAI
Context window	400K tokens
Max output	128K tokens
Input modalities	file, image, text
Output modalities	text
Knowledge cutoff	2025-08-31
Open weights	No
Released	March 17, 2026

Cheaper alternatives

Models that cost less than GPT-5.4 Mini while keeping at least half its context window and every input modality it supports.

Gemini 3.8 Flash

$0.825 in · $4.13 out

about the same cheaper

Grok 4.3

$1.25 in · $2.50 out

1.1× cheaper

Grok 4.20 Multi-Agent

$1.25 in · $2.50 out

1.1× cheaper

Grok 4.20

$1.25 in · $2.50 out

1.1× cheaper

Gemini 3.7 Flash

$0.750 in · $3.75 out

1.1× cheaper

Frequently asked

How much does OpenAI: GPT-5.4 Mini cost?

$0.750 per million input tokens and $4.50 per million output tokens. Cached input reads cost $0.075 per million tokens.

What is the context window of OpenAI: GPT-5.4 Mini?

400K tokens, with up to 128K tokens of output per request.

Does OpenAI: GPT-5.4 Mini have extra fees beyond per-token pricing?

Yes. OpenAI: GPT-5.4 Mini charges $0.01 per search request - $10.00 per 1,000 requests - on top of $0.750 per million input tokens and $4.50 per million output tokens. On a typical 1,000-input / 500-output exchange the search fee alone is 3.3× the token cost.

Which provider serves OpenAI: GPT-5.4 Mini cheapest?

OpenAI at $0.375 per million input tokens - 2.0× cheaper than Azure, the most expensive of the 2 hosts serving it.

Confirm against the source: OpenAI official pricing.