Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 25.7% higher average benchmark score. GPT-4.1 nano offers 948.2K more tokens in context window than GPT-4.5. GPT-4.1 nano is $224.50 cheaper per million tokens. Overall, GPT-4.5 is the stronger choice for coding tasks.
OpenAI
GPT-4.1 Nano was developed as the smallest and most efficient variant in the GPT-4.1 family, designed for applications requiring minimal latency and resource usage. Built to enable AI capabilities on edge devices and resource-constrained environments, it distills GPT-4.1 capabilities into an ultra-compact form factor.
OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
1 month newer

GPT-4.5
OpenAI
2025-02-27

GPT-4.1 nano
OpenAI
2025-04-14
Cost per million tokens (USD)

GPT-4.1 nano

GPT-4.5
Context window and performance specifications
Average performance across 21 common benchmarks

GPT-4.1 nano

GPT-4.5
GPT-4.1 nano
2024-05-31
Available providers and their performance metrics

GPT-4.1 nano
OpenAI

GPT-4.5

GPT-4.1 nano

GPT-4.5

GPT-4.1 nano

GPT-4.5
OpenAI