GPT-5.4 mini

GPT-5.4 mini is a compact variant in OpenAI's GPT-5.4 family, released alongside the even smaller GPT-5.4 nano on March 17, 2026. According to OpenAI's announcement, the model is built to bring many of the strengths of GPT-5.4 into a faster, more efficient package aimed at high-volume workloads where latency directly shapes the product experience, such as responsive coding assistants and subagents that quickly finish supporting tasks.

OpenAI describes GPT-5.4 mini as a meaningful step up from GPT-5 mini, with significant improvements across coding, reasoning, multimodal understanding, and tool use while running more than 2x faster. The release notes indicate that the model approaches the larger GPT-5.4's performance on several evaluations, including SWE-Bench Pro and OSWorld-Verified, making it a practical choice for teams that need near-flagship reasoning and tool reliability in a smaller, lower-latency form factor.

Kilo Gatewayopenai/gpt-5.4-minigpt-mini

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Quick Info

Provider: Kilo Gateway
Model key: openai/gpt-5.4-mini
Release date: Mar 17, 2026
Last updated: Mar 17, 2026
Knowledge cutoff: 2025-08-31
Input modalities
Output modalities
Capabilities

Cost

Input token cost: $0.75
Output token cost: $4.50

Limits

Input tokens: 272,000 tokens
Output tokens: 128,000 tokens
Context window: 400,000 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about GPT-5.4 mini

Kilo Gateway

Official sourceRelease Notes

OpenAI's official Model Release Notes page (updated 3 days before the August 22, 2026 current date) shows that GPT-5.4 mini is no longer at the frontier of OpenAI's lineup: the most recent entries cover a Model Spec update on August 18, 2026 (adding clarity on teen-appropriate relational interactions, handling of false This evidence is relevant context for any framing of GPT-5.4 mini: with GPT-5.6 Sol already rolling out to paid ChatGPT plans and GPT-5.5 Instant refreshed in May 2026, GPT-5.4 mini is at least one — and arguably two — generations behind OpenAI's current reasoning and instant tiers, so it should be positioned as a cost

Neon

Coverage

The apxml.com catalog page for GPT-5.4 mini lists it as a closed-source, proprietary OpenAI model released on March 16, 2026, with an undisclosed parameter count and architecture, multimodal input, a 400K context length, and API pricing of $0.75 per 1M input tokens and $4.50 per 1M output tokens. The page notes that GP According to the same page, GPT-5.4 mini supports text and image inputs plus tool use, function calling, web search, file search, computer use, and skills, and is available via the API as gpt-5.4-mini. The page also catalogues published benchmark ranks across GPQA, LiveBench categories, Text Arena, WebDev Arena, and Ar

Vivgrid

CoverageRelease Notes

Independent EdTech Innovation Hub coverage dated 19 March 2026 reports that OpenAI released GPT-5.4 mini and GPT-5.4 nano, two smaller models designed for high-volume workloads balancing performance, cost, and latency, announced via a LinkedIn post from OpenAI for Business. The article quotes OpenAI saying: "Today we'r According to the same article, GPT-5.4 mini improves on GPT-5 mini across coding, reasoning, multimodal understanding, and tool use while running more than twice as fast, and approaches the performance of the larger GPT-5.4 model on SWE-Bench Pro and OSWorld-Verified. GPT-5.4 nano is positioned as the smallest, lowest-