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URL: https://apxml.com/models/gpt-54-mini

⇱ GPT-5.4 mini: Model Specifications and Details


GPT-5.4 mini

Parameters

-

Context Length

400K

Modality

Multimodal

Architecture

Dense

License

Proprietary

Release Date

17 Mar 2026

Knowledge Cutoff

-

Technical Specifications

Attention

Attention Structure

Multi-Head Attention

Attention Heads

-

Key-Value Heads

-

Attention Head Dimension

-

Position Embedding

Absolute Position Embedding

RoPE Theta

-

Sliding Window Attention

-

Sliding Window Size

-

Normalization

-

Activation Function

-

Dimensions

Hidden Dimension Size

-

Number of Layers

-

FFN Intermediate Size (Dense)

-

Multi-Token Prediction Heads

-

Tokenizer

Vocabulary Size

-

GPT-5.4 mini

GPT-5.4 mini is OpenAI's fast, efficient small model that brings many capabilities of GPT-5.4 to high-volume workloads. It significantly improves over GPT-5 mini across coding, reasoning, multimodal understanding, and tool use while running more than 2x faster. Approaches GPT-5.4 performance on SWE-Bench Pro (54.4%) and OSWorld-Verified (72.1%). Supports text and image inputs, tool use, function calling, web search, file search, computer use, and skills. 400K context window. Pricing: $0.75/M input, $4.50/M output. Available via API as gpt-5.4-mini. Released March 17, 2026.

About GPT-5.4

GPT-5.4 is OpenAI's most capable and efficient frontier model for professional work, combining the industry-leading coding capabilities of GPT-5.3-Codex with major advances in reasoning, computer use, and agentic workflows. It introduces native computer-use capabilities, tool search for large tool ecosystems, substantially improved knowledge work (spreadsheets, presentations, documents), and is OpenAI's most factual and token-efficient reasoning model. Supports up to 1M context tokens in Codex. Released March 5, 2026.


Other GPT-5.4 Models

Evaluation Benchmarks

Rank

#41

BenchmarkScoreRank

General Text

Text Arena

1457

19

0.75

22

0.72

25

0.79

25

Web Development

WebDev Arena

1399

36

Rankings

Overall Rank

#41

Coding Rank

#46

Model Integrity

Total Score

F

34 / 100