ChatGPT Model Comparison for Coding: Which OpenAI Model Should You Use in 2026?

ChatGPT Model Comparison for Coding: Which OpenAI Model Should You Use in 2026?

ChatGPT model comparison for coding in 2026: GPT-5.5 Instant, GPT-5.6, GPT-4.1, and GPT-4o compared by coding strength, context window, and cost.