gpt-5-4-mini
Overview
GPT-5.4 Mini is OpenAI's high-performance compact model released on March 17, 2026, an efficient distillation of GPT-5.4. It significantly improves over GPT-5 Mini across coding, reasoning, multimodal understanding, and tool use while running 2x+ faster, at roughly 1/6 the cost of the standard model — ideal for high-volume workloads.
Key Features
- Near-Flagship Performance: Scores 54.38% on SWE-Bench Pro, remarkably close to the standard model's 57.7%, at roughly 1/6 the cost.
- Strong Scientific Reasoning: Achieves 87.5% on GPQA Diamond, excelling at graduate-level scientific reasoning tasks.
- Full Tool Support: Supports tool use, web search, image analysis, and Native Computer Use — full capability retention.
- 2x+ Speed Improvement: Runs 2x+ faster than GPT-5 Mini, suitable for latency-sensitive workloads.
- 400K Context Window: Supports a 400,000 token context window with vision input, suitable for medium-scale long document processing.
Best Use Cases
- Coding Assistants & Sub-Agents: Approaches flagship-level performance on coding benchmarks, delivering reliable code generation and repair at significantly lower cost.
- Real-Time AI Applications: 2x speed improvement makes it ideal for chatbots, real-time translation, and interactive coding assistance.
- High-Throughput Data Processing: Low-cost, high-performance combination suits large-scale document classification, content moderation, and data extraction pipelines.
- Desktop Automation Agents: Full Native Computer Use support for building moderately complex desktop automation workflows.
Capabilities and Limitations
| Capability | Detailed Description |
|---|---|
| Reasoning Ability | SWE-Bench Pro 54.38%, GPQA Diamond 87.5%; strong reasoning but slightly behind standard on the most complex multi-step problems. |
| Creative Ability | Good text and code generation for most everyday creative tasks; less capable than standard for creation requiring very deep reasoning. |
| Multimodal Ability | Supports text and image input with text output; significantly improved multimodal understanding and image analysis over GPT-5 Mini. |
| Response Speed | Fast — 2x+ faster than GPT-5 Mini, suitable for latency-sensitive scenarios. |
| Context Window | 400,000 tokens |
| Max Output | Not officially specified, estimated 16,000–32,000 tokens |
| Knowledge Cutoff | August 31, 2025 |
Standard Pricing
The token prices below are shown in USD per 1 million tokens; web search is billed in USD per use.
| Model | Input (USD / 1M Tokens) | Cache Write (USD / 1M Tokens) | Cache Read (USD / 1M Tokens) | Output (USD / 1M Tokens) | Web Search (USD / use) |
|---|---|---|---|---|---|
| GPT-5.4 Mini | $0.75 | $0.75 | $0.075 | $4.50 | $0.01 |
Credits settlement: B.AI converts charges at 1 USD = 1,000,000 Credits and deducts Credits from the account balance.
Prices shown in the documentation are B.AI standard reference prices for base billing purposes. B.AI may provide lower actual usage costs through top-up bonuses and account benefits. Specific prices, bonus Credits, and account benefits are subject to the platform display and final billing records.