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LightweightOpenAI
GPT-5.4 Mini
GPT-5.4 Mini is OpenAI's lightweight model offering text and image processing with a 128K token context window for cost-efficient tasks.
Context 128K
Tier Lightweight
Modalities text, image
Input from
$0.375 / 1M tokens
across 4 providers
API Pricing
Cheapest on OpenAI — 40% below avg| Provider | Input / 1M | Output / 1M | Cached / 1M |
|---|---|---|---|
| $0.375 | $2.25 | $0.037 | |
| $0.375 | $2.25 | $0.037 | |
| $0.750 | $4.50 | $0.080 | |
| $0.750 | $4.50 | $0.075 | |
| $0.750 | $4.50 | $0.075 | |
| $0.750 | $4.50 | $0.075 |
Prices updated daily. Last check: Sep 6, 2026
GPT-5.4 Mini pricing by provider
Input, output, and batch rates, plus alternatives, for one provider at a time.
Performance & Benchmarks
Source: Artificial Analysis →Intelligence
31.9 / 100
Coding
56.1 / 100
Reasoning & Knowledge
- GPQA Diamond87.5%
- Humanity's Last Exam28.1%
Agentic & Tool Use
- Terminal-Bench Hard52.3%
- Terminal-Bench v2.159.2%
- τ²-bench83.3%
- τ-bench Banking25.6%
Instruction & Long Context
- IFBench73.3%
- Long-Context Reasoning77.0%
Benchmarks measured Sep 2026. Scores are independent evaluations, not vendor-reported.
Model Details
General
- Creator
- OpenAI
- Family
- GPT
- Tier
- Lightweight
- Context Window
- 128K
- Modalities
- Text, Image
Capabilities
- Tool Calling
- No
- Open Source
- No
Strengths & Limitations
Strengths
- Supports both text and image input processing
- 128K token context window enables long document analysis
- Lightweight architecture reduces computational overhead
- Maintained training quality from OpenAI's development pipeline
- Multimodal capabilities without tool calling complexity
- Suitable for high-volume deployments due to efficiency focus
- Part of established GPT model family with proven reliability
Limitations
- No tool calling or function execution capabilities
- Proprietary model with no access to weights
- Reduced capabilities compared to full GPT-5.4 model
- Limited to text and image modalities only
- Smaller context window than flagship models in GPT family
Key Features
•128K token context window
•Text input and generation
•Image input processing
•Multimodal content analysis
•Streaming response support
•Lightweight model architecture
•Batch processing compatibility
•API-based access through OpenAI
About GPT-5.4 Mini
GPT-5.4 Mini is OpenAI's lightweight model in the GPT family, positioned as a cost-effective alternative to the full GPT-5.4 model. As a tier-down option, it provides balanced capabilities at reduced computational requirements while maintaining OpenAI's core architecture and training approaches.
The model supports both text and image inputs with a 128,000 token context window, enabling multimodal processing for documents, visual content analysis, and extended conversations. Unlike its larger sibling, GPT-5.4 Mini does not include tool calling capabilities, focusing instead on direct text generation and image understanding tasks. This streamlined feature set makes it suitable for applications where advanced function calling is not required.
GPT-5.4 Mini serves users who need reliable language model performance without the overhead of flagship-tier capabilities. It competes with other lightweight models in the market by offering OpenAI's training quality and multimodal support at a more accessible resource profile, making it practical for higher-volume deployments where cost efficiency is prioritized alongside capability.
Common Use Cases
GPT-5.4 Mini is designed for cost-sensitive applications that require reliable language processing without advanced tool integration. Its multimodal capabilities make it suitable for content moderation, document analysis with embedded images, customer support automation, and educational content processing. The 128K context window supports summarization of lengthy documents, while the lightweight architecture enables high-throughput scenarios like content classification, basic writing assistance, and simple image description tasks. Organizations choosing GPT-5.4 Mini typically prioritize operational efficiency and cost management while maintaining access to quality language model performance for routine tasks that don't require the full capabilities of flagship models.
Frequently Asked Questions
How much does GPT-5.4 Mini cost per million tokens?
GPT-5.4 Mini pricing varies by provider and usage type (standard vs batch processing). Check the pricing table above for current rates across all available providers.
What is GPT-5.4 Mini best used for?
GPT-5.4 Mini excels at cost-efficient text generation, document analysis, image description, and content processing tasks. Its 128K context window supports long-form content while the lightweight design makes it practical for high-volume applications like content moderation, customer support, and educational tools where tool calling is not required.
Does GPT-5.4 Mini support function calling and tools?
No, GPT-5.4 Mini does not include tool calling capabilities. It focuses on direct text generation and image understanding without function execution features. For applications requiring tool integration, consider the full GPT-5.4 model or other models with function calling support.