It's actually more complex than just input and output tokens, there are more pricing rules by various providers:

- Off-peak pricing by DeepSeek

- Batch pricing by OpenAI and Anthropic

- Context window differentiated pricing by Google and Grok

- Thinking vs non-thinking token pricing by Qwen

- Input token tiered pricing by Qwen coder

I originally posted here: https://x.com/paradite_/status/1947932450212221427