GPT-5: The Complete Guide to OpenAI's Flagship Model

GPT-5 represents a significant leap in AI capabilities. This comprehensive guide covers what makes it special and how to use it effectively.

What is GPT-5?

GPT-5 is OpenAI's latest flagship model, featuring:

• Unified intelligence architecture that routes requests optimally
• 400K token context window (128K max output)
• Native multimodal (text, code, image, video)
• Variable reasoning depth based on task complexity

Model Variants

GPT-5 Pro

• Highest accuracy with extended reasoning
• Responses API only
• $15/M input, $120/M output

GPT-5 Standard

• Balanced performance for most use cases
• Text and vision capabilities
• $1.25/M input, $10/M output

GPT-5 Mini

• Cost-effective for well-defined tasks
• Great latency and throughput
• $0.25/M input, $2/M output

Key Capabilities

Coding Excellence

• Full-stack application development
• Complex algorithm implementation
• Database design and optimization

Advanced Reasoning

• Multi-step problem solving
• Mathematical proof generation
• Scientific analysis

Multimodal Understanding

• Image analysis and description
• Video content understanding
• Code generation from UI mockups

Cost Optimization

1. Use Mini for simple tasks - save 80% on costs
2. Cache frequently used prompts - 50% discount on cached inputs
3. Monitor usage with our Token Calculator
4. Implement retry logic for failed requests

Best Use Cases

• Enterprise assistants - Pro tier for critical applications
• Development tools - Standard for code generation
• Customer support - Mini for high-volume queries
• Content creation - Standard for quality output

Migration Tips

Upgrading from GPT-4:

• Reduce prompt complexity - GPT-5 understands context better
• Leverage multimodal capabilities where possible
• Adjust for higher output costs
• Test with Standard tier before upgrading to Pro

Compare GPT-5 with other models on our models page and calculate costs with the Token Calculator.