OpenAI: GPT-4.1 Nano

GPT-4.1 Nano is OpenAI's budget-tier text and vision model, accepting image, text, and file inputs with a context window of just over one million tokens. It supports tool use, which makes it usable in agentic pipelines, but it does not support reasoning modes. Structured output support is unconfirmed based on available specifications. At $0.10 per million input tokens and $0.40 per million output tokens, it sits at the low end of the pricing spectrum, making cost the clearest argument for choosing it. Benchmark coverage is limited to five benchmarks with a blended score of 16.7, so performance claims should be treated as provisional rather than settled. Teams running high-volume, lower-complexity workloads such as classification, summarization, or lightweight tool-calling pipelines will find the price attractive, but buyers who need strong reasoning or verified benchmark depth should compare it against better-covered alternatives before committing.