GPT-5.4 Mini

openai/gpt-5.4-mini-20260317

OpenAI's GPT-5.4 Mini, released on 2026-03-17, supports file, image, and text inputs and generates text output. It provides a context length of 400,000 tokens, supports tool usage and reasoning, and is not open-weight. Pricing is $0.75 per million input tokens and $4.5 per million output tokens.

  • tool use
  • structured outputs
  • reasoning

At a glance

provideropenai
releasedMar 17, 2026
context400K
input / M$0.75

Specifications

What the API gives you

Context window
400K tokens
Max output
128K tokens
Input price
$0.75 / 1M tokens
Output price
$4.50 / 1M tokens
Cache read
$0.075 / 1M tokens
Modalities
file, image, text → text
Knowledge cutoff
Aug 31, 2025
Released
Mar 17, 2026

Recommendation coverage

Where this model appears

  1. #2Best LLM for Fast Summaries
  2. #2Best LLM for Summarization
  3. #3Best LLM for a General Assistant
  4. #6Best LLM for Marketing Copy
  5. #7Best LLM for Competition Math

Measured evidence

Public benchmark record

LMArena Text
1496 Elo2026-07-20
LMArena Vision
1247 Elo2026-07-12
LMArena WebDev
1398 Elo2026-07-16
LMArena WebDev
1398 Elo2026-07-20

LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.