› Understanding OpenAI API pricing requires looking at per-token base rates, prompt caching discounts, and specific surcharge thresholds across different model tiers.
› Whether you are running lightweight tasks on GPT-6 Luna or complex reasoning workloads on GPT-6 Astra, rates vary significantly based on context size and output generation.
› If you build multi-model workflows, you can also explore how I approach model access in my Jantaris overview.
› As of 18 October 2026OpenAI API rates double for requests exceeding 272k tokens.Reasoning tokens generated by newer models are billed at the full output rate.GPT-6.1 Sol ($2 input, $10 output per 1M tokens) is available exclusively directly from OpenAI.Cached inputs offer significant discounts across both GPT-6 and GPT-5.6 tiers.