AIToday
Large Language ModelsAI Coding AssistantsAI Business & IndustryTHE DECODERPublished: Apr 19, 2026, 22:00 JST1 min read

Anthropic's new Opus 4.7 tokenizer inflates costs by up to 47% despite maintaining the same per-token pricing as its predecessor.

Anthropic's new Opus 4.7 tokenizer inflates costs by up to 47% despite maintaining the same per-token pricing as its predecessor.

3 Key Points

  1. Opus 4.7 uses a new tokenizer that converts the same text into up to 47% more tokens than Opus 4.6

  2. While per-token pricing remains flat between the two models, actual request costs are significantly higher due to increased token consumption

  3. Claude Code users are seeing measurable cost increases in practice from this tokenizer change

  4. The price increase effectively contradicts Anthropic's stated flat pricing structure between model generations

Ask the AI about this article →

Get the latest Large Language Models news every morning

For example, today's edition would include:

  • CBTS launches Forge Agents for custom AI agentsSiliconANGLE AI · 2h ago
  • Imec CEO: AI era widens chip-model-CSP collaborationDIGITIMES Asia · 2h ago
  • Alphabet's AI Overviews reach 2.5B monthly usersYahoo Finance AI · 2h ago

AI-summarized, only the topics you pick — one digest a day via Email, Slack, or Discord.

Free · takes 30 seconds · unsubscribe anytimeWhat is AIToday? →

Ask AI

Ask AI anything about this article. Q&As are published on this page for other readers too.

Related Articles

Next articleCouple launches AI Primer, a curated changelog tool helping AI engineers stay updated on industry developments without social media overwhelm.