GPT 5.4 Pro

ChatInput: TextInput: ImageInput: FileReleased Mar 5, 2026

Built by OpenAI · United States · openai.com

GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...

How to use

model: "openai/gpt-5.4-pro"

Cap quality here and save

Hard questions go to this model, easy ones drop to something cheaper. Set a savings target (0–0.8) and the router tunes itself until realized savings converge on it.

{
  "model": "celon/auto",
  "celon": {
    "anchor": "openai/gpt-5.4-pro",
    "savings_target": 0.4
  }
}

Naming a model directly gets you that model — savings controls don't apply.

Context

1.1M

Max output

128K

Input $/1M

$30.00

Output $/1M

$180.00

Features

Image inputTool callingJSON

Serving providers

OpenAI

Providers

Price, latency, and uptime per provider serving this model. Celon routes each request to the fastest and cheapest of them. Click a row for regions and data policies.

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Performance

Benchmark quality scores, and measured speed per provider.

Quality

Epoch Capabilities IndexComposite over 50+ benchmarks

157.8

GPQA DiamondPhD-level science questions

94.6%

FrontierMathResearch-level mathematics

50.0%

ARC-AGI-2Abstract reasoning

83.3%

SimpleQA VerifiedFactual accuracy

47.8%

HLEHumanity's Last Exam

44.3%

At each model's best reasoning effort. Benchmarks it wasn't run on are omitted.

Speed

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