What's Changed

• feat(api): add GET /sessions, add more time-based filters to GET APIs, use withMiddleware and strict zod types for many existing api routes by @marcklingen in https://github.com/langfuse/langfuse/pull/2551
• perf(dashboard): default to 1d date range by @marcklingen in https://github.com/langfuse/langfuse/pull/2606
• fix(tokencost): write total cost if input or output cost provided by user by @hassiebp in https://github.com/langfuse/langfuse/pull/2603
• fix: hide export button if insufficient access rights by @hassiebp in https://github.com/langfuse/langfuse/pull/2572
• refactor(scores-api): simplify types, ensure return types of API are consistent in documentation and return by @marliessophie in https://github.com/langfuse/langfuse/pull/2565
• fix(ui): pretty UI for chatml traces with custom roles by @marcklingen in https://github.com/langfuse/langfuse/pull/2581
• fix(ui): deletion of traces led to refetching of deleted trace and logged warning by @marcklingen in https://github.com/langfuse/langfuse/pull/2580
• fix(ingestion): allow nested objects in modelParams by @hassiebp in https://github.com/langfuse/langfuse/pull/2585
• docs: ensure CreateScoreValue is consistent with pydantic type expectation by @marliessophie in https://github.com/langfuse/langfuse/pull/2582
• fix(tokenization): add all tiktoken models by @maxdeichmann in https://github.com/langfuse/langfuse/pull/2588
• fix(UI): glitch in creating score config by @marliessophie in https://github.com/langfuse/langfuse/pull/2601
• fix(score_configs): migrate to set categories NULL for numeric scores by @marliessophie in https://github.com/langfuse/langfuse/pull/2602
• refactor(api): move strict check to api types instead of test util and middleware by @marcklingen in https://github.com/langfuse/langfuse/pull/2604

Full Changelog: https://github.com/langfuse/langfuse/compare/v2.60.4...v2.61.0