Why this tool exists
Opus 4.7 is a direct upgrade to Opus 4.6, but two changes are worth planning for because they affect token usage. First, Opus 4.7 uses an updated tokenizer that improves how the model processes text. The tradeoff is that the same input can map to more tokens—roughly 1.0–1.35x depending on the content type. Second, Opus 4.7 thinks more at higher effort levels, particularly on later turns in agentic settings. This improves its reliability on hard problems, but it does mean it produces more output tokens.
The updated tokenizer in Opus 4.7 means the exact same prompt text gets counted as more tokens. More tokens means higher cost per request, even if you don't change a single word.
Tokenomics lets you paste any conversation, system prompt, or text and see the concrete difference: how many more tokens Opus 4.7 counts versus 4.6, and what that costs you at current pricing.
The community averages page aggregates anonymous comparisons from everyone who uses the tool, so you can see the real-world average increase across different prompt types.