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Claude Token Counter, now with model comparisons
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Overview
Claude Token Counter now supports model comparisons, allowing users to run token counts against different Claude models. The tool includes options for all four notable models, with a specific focus on comparing Claude Opus 4.7 and 4.6 due to changes in the tokenizer.
Summary from simonwillison.net.
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Claude Token Counter, now with model comparisons
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Hacker News · simonwillison.net
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Based on 5 sampled comments from this thread. Analyzed 2026-04-20.
- Praise: The new tokenizer may enhance model performance by being more semantically aware, potentially leading to better responses and reduced need for re-prompts.
- Praise: Some users report that the updated model is performing better in their benchmarks, indicating a positive impact on overall utility.
- Praise: The discussion around tokenization highlights its critical role in model training and performance, suggesting that improvements in this area could lead to more efficient AI applications.
- Concern: Concerns about the increased token usage suggest that the changes may lead to higher costs for users, raising questions about the sustainability of subscriptions.
- Concern: Some users feel that the lack of transparency from Anthropic regarding the tokenizer changes could indicate a money grab rather than genuine improvements.
- Concern: There are worries that the model's performance may vary significantly across different languages, potentially disadvantaging non-English users.