GPT-4.1 Launches in API with 1M Token Context and Reduced Pricing Tiers

OpenAI released GPT-4.1, GPT-4.1 Mini, and GPT-4.1 Nano via its API, offering a 1 million token context window and pricing cuts of up to 26% versus GPT-4o. The models show improved instruction-following and coding benchmarks, with GPT-4.1 scoring 55% on SWE-bench verified. Developers gain immediate access to all three tiers with updated function-calling and vision capabilities.