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OpenAIProprietary
GPT-5.4 Pro
GPT-5.4 Pro is a multimodal foundation model developed by OpenAI. It features an extensive context window of 1 million tokens.
Parameters
Undisclosed
Context Window
1M
License
Proprietary
Release Date
2026-03-05
API Pricing
Input Price (per 1M tokens)
$30
Output Price (per 1M tokens)
$
Billing Mode: standard
Strengths
- ・Advanced multi-modal capabilities
- ・1 million token long-context processing
- ・Latest foundation model from OpenAI
Weaknesses
- ・Non-public license
- ・Undisclosed source code
- ・Closed environment with usage limits
Use Cases
- ・Large-scale document analysis
- ・Multi-modal data processing
- ・Advanced context utilization
Deep Analysis
Release Date
March 5, 2026
Context Window
1M tokens (~922K input / 128K output)
Input Price
$30.00 / 1M tokens
Output Price
$180.00 / 1M tokens
Modality
Multimodal (Text, Image, File input)
Architecture
Dense, Proprietary
Hallucination Rate
33% fewer than GPT-5.2
Per OpenAI claims
Strengths
- ・OpenAI's most advanced model with maximum reasoning depth and accuracy
- ・Massive 1M token context window enables processing of entire codebases and lengthy documents
- ・33% fewer hallucinations than GPT-5.2, making it the most reliable for critical work
- ・Excellent for hard math, physics, statistics, and research-grade writing
- ・Supports structured outputs, reasoning tools, and response format controls
Weaknesses
- ・Extremely expensive at $30/$180 per 1M tokens, cost-prohibitive for most use cases
- ・Genuinely slow response times; not suitable for real-time or interactive applications
- ・Overkill for everyday tasks where GPT-5.4 Thinking suffices
- ・Only available on the Pro $200/mo subscription tier in ChatGPT
- ・Limited availability — Azure and OpenAI API only
Competitor Comparison
| Model | Arena | SWE | GPQA | Price |
|---|---|---|---|---|
| Claude Opus 4.5 | ~1450 | 80.9% | ~92% | $15/$75 per 1M tokens |
| Gemini 3 Pro | ~1420 | 76.2% | ~90% | $3.50/$10.50 per 1M tokens |
| GPT-5.4 | ~1440 | ~78% | ~91% | $2.50/$15 per 1M tokens |
| GPT-5.2 Pro | ~1450 | ~80% | 92.4% | $10.50/$84 per 1M tokens |
Sources
Analysis generated: 2026-05-24