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OpenAI · Efficient

GPT 5.4 Mini

Added Mar 17, 2026

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Use in the app

GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads.

  • Reasoning
  • Tools
  • Vision
  • Structured output
  • PDF input
Input
Text, Images
Output
Text
Reasoning effort
none · low · medium · high · xhigh
Discovery tier
Efficient

Pricing

USD per 1M tokens
Input
$0.75
Output
$4.50
Cache read
$0.075

Reference prices as published by the model provider. API example

Specifications

Context window
400K
Max output
128K
Average output (7 days)
172 tokens
Longer than 17% of 465 models

Side by side

GPT 5.4 Mini compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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GPT 5.4 MiniOpenAIThis modelGLM 4.5 AirZ.aiRemove
ProviderOpenAIZ.ai
Discovery tierEfficientOpen weights
AddedMar 17, 2026Apr 15, 2025
Limits
Context window400KBest128K
Max output128KBest98.3K
Average output172 tokens59 tokens
Pricing, USD per 1M tokens
Input$0.75$0.13Best
Output$4.50$0.85Best
Cache read$0.075$0.025Best
Performance
Throughput128.9 tok/sBest89.9 tok/s
Time to first token0.8 sBest1.6 s
Request success (24h)100.0%100.0%
Benchmark indexes
Intelligence Index11.111.1
Math Index—80.7
Capabilities
ReasoningYesNo
ToolsYesYes
VisionYesNo
Structured outputYesYes
PDF inputYesNo
Reasoning effortnone, low, medium, high, xhigh—

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

  • GPT 5.4 Mini
  • GLM 4.5 Air

Intelligence Index

  • GPT 5.4 Mini11.1
  • GLM 4.5 Air11.1

GPT 5.4 Mini: Better than 23% of 326 scored models

3.8Catalog models by score55.1

Indexes

  • Math Index

    Composite of the math evaluations

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 80.7

Agentic work

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • GPT 5.4 Mini: 589 Elo
    • GLM 4.5 Air: —

Document reasoning

  • AA-LCRv1.1

    Reasoning across long documents

    • GPT 5.4 Mini: 37.0%
    • GLM 4.5 Air: 46.7%Top

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • GPT 5.4 Mini: 5.9%
    • GLM 4.5 Air: 7.0%Top

  • GPQA Diamond

    Graduate-level science questions

    • GPT 5.4 Mini: 60.6%
    • GLM 4.5 Air: 73.3%Top

  • MMLU-Pro

    Multi-subject knowledge and reasoning

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 81.5%

  • IFBench

    Following precise output instructions

    • GPT 5.4 Mini: 38.8%Top
    • GLM 4.5 Air: 37.6%

Coding

  • LiveCodeBench

    Recent competitive programming problems

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 68.4%

Math

  • AIME 2025

    Competition mathematics, 2025 problems

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 80.7%

  • AIME

    Competition mathematics

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 67.3%

  • MATH-500

    Competition math problems

    • GPT 5.4 Mini: —
    • GLM 4.5 Air: 96.5%

Legacy evaluations

  • Terminal-Bench Hard

    Earlier terminal task suite

    • GPT 5.4 Mini: 18.2%
    • GLM 4.5 Air: 20.5%Top

  • τ²-Bench Telecom

    Tool use in a customer-support simulation

    • GPT 5.4 Mini: 23.4%
    • GLM 4.5 Air: 46.5%Top

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • GPT 5.4 Mini: 37.0%
    • GLM 4.5 Air: 46.7%Top

Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis

Live routing data

Performance and reliability

Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.

Throughput
128.9 tok/s
Faster than 72% of 251 models
Time to first token
0.8 s
Quicker than 97% of 251 models
Prompt cache hits
29.1%
About $0.55 per 1M input tokens with caching
Request success (24h)
100.0%
Reliable

Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.

Hourly request success · last 72 hoursLowest hour 100.0%
  • Healthy (98% or more)
  • Degraded (90–98%)
  • Down (under 90%)
  • No requests

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4-mini",
    "reasoning_effort": "medium",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="openai/gpt-5.4-mini",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

OpenAI

Other OpenAI models, starting with the same family.