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

⇱ GPT-5.4: Model Specifications and Details


GPT-5.4

Parameters

-

Context Length

272K

Modality

Multimodal

Architecture

Dense

License

Proprietary

Release Date

5 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

GPT-5.4 is OpenAI's most capable and efficient frontier model for professional work. It brings together advances in reasoning, coding, and agentic workflows into a single model. Features industry-leading coding capabilities from GPT-5.3-Codex, native state-of-the-art computer-use capabilities, and improved tool use across large ecosystems. Excels at professional tasks involving spreadsheets, presentations, and documents. Achieves 83.0% on GDPval, 75.0% on OSWorld-Verified, 82.7% on BrowseComp, 57.7% on SWE-Bench Pro, and 81.2% on MMMU Pro. Supports up to 272K context (1M experimental) and delivers most token-efficient reasoning yet.

About GPT-5

OpenAI's latest generation of language models featuring advanced reasoning capabilities, extended context windows up to 400K tokens, and specialized variants for coding, general intelligence, and efficiency. GPT-5 series introduces improved thinking modes, superior performance across benchmarks, and variants optimized for different use cases from high-capacity Pro models to efficient Nano models. Features native multimodal understanding, enhanced mathematical reasoning, and state-of-the-art coding abilities through Codex variants.


Other GPT-5 Models

Evaluation Benchmarks

Rank

#6

BenchmarkScoreRank

Agentic Coding

LiveBench Agentic

0.70

🥇

1

0.94

🥇

1

0.79

🥇

1

0.88

🥈

2

Professional Knowledge

MMLU Pro

0.87

6

General Text

Text Arena

1468

13

Web Development

WebDev Arena

1457

19

Rankings

Overall Rank

#6

Coding Rank

#42

Model Integrity

Total Score

D

35 / 100