The token cost generated by session titles, message summary titles, and body summaries has not been accounted for. #7175

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1. junmediatek

   added

   bugSomething isn't workingSomething isn't working

   on Jan 7, 2026
2. github-actions

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   thdxr

   on Jan 7, 2026
3. github-actions

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   zenRelates to ZenRelates to Zen

   on Jan 7, 2026
4. github-actions commented on Jan 7, 2026

   

   github-actionsBot

   on Jan 7, 2026 – with GitHub Actions

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   This issue might be a duplicate of existing issues. Please check:

   • Token count is way off #5951: Token count is way off (major discrepancy between shown token count and actual API usage)
   • [FEATURE]: Configuration option to disable message summary generation #6228: Configuration option to disable message summary generation (specifically mentions that summary generation creates additional LLM requests with costs)
   • Cost in storage/session is always 0 #2891: Cost in storage/session is always 0 (cost tracking issues)
   • [FEATURE]: Display total cost for session #4925: Display total cost for session (cost visibility concerns)

   Feel free to ignore if none of these address your specific case.
5. junmediatek commented on Jan 7, 2026

   

   junmediatek

   on Jan 7, 2026

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   @rekram1-node @thdxr

   Could you help to check this issue?
6. rekram1-node

   assigned

   rekram1-node

   and unassigned

   thdxr

   on Jan 7, 2026
7. rekram1-node

   removed

   zenRelates to ZenRelates to Zen

   on Jan 7, 2026
8. junmediatek commented on Jan 12, 2026

   

   junmediatek

   on Jan 12, 2026

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   @rekram1-node Is there anything update for this issue?
9. thdxr commented on Mar 25, 2026

   

   thdxr

   on Mar 25, 2026

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   To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.
10. fedealliani commented on Apr 1, 2026

    

    fedealliani

    on Apr 1, 2026

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    Still relevant on v1.3.11. We ran into this while building cost analytics for our multi-tenant platform that embeds OpenCode.

    Confirmed empirically: title generation, summary titles, and body summaries make LLM calls via LLM.stream() but never persist token usage or cost on any message. For title generation specifically (prompt.ts), the call uses provider.getSmallModel() / the small_model config and updates the session title via sessions.setTitle() without creating an AssistantMessage, so there's no surface to attach usage data to.

    For compaction, an AssistantMessage is created but tokens are initialized to zero and never populated with actual usage from the LLM call.

    As a workaround for the main prompt cost tracking, we accumulate tokens/cost from step-finish parts (via message.part.updated events) instead of relying on message.updated — but that doesn't help with these hidden background costs since they don't emit step-finish parts at all.

    Would be great to see this addressed — for BYOK (bring your own key) deployments, accurate cost reporting to end users is critical.
11. thdxr

    removed

    bugSomething isn't workingSomething isn't working

    on May 3, 2026
12. rekram1-node

    closed this as not plannedon May 22, 2026