Langfuse Files

[!IMPORTANT] This is a major release of Langfuse as it requires to run a one-off (non-blocking) migration script on historical data to ensure accurate LLM costs in Langfuse. - No changes are required if you use Langfuse Cloud or are only concerned about newly ingested traces. - There are no other breaking changes.

What's Changed

• Fully rebuilt usage/cost tracking of LLM generations in Langfuse by @maxdeichmann and @marcklingen
• New model definition abstraction which allows to:
  • Quickly support newly emerging models.
  • Track changes in model prices over time.
  • Add custom models/prices at the project level.
• You can also set (token) usage and cost via the API when ingesting traces.
• Usage and cost information on all UI tables and APIs.
• See changelog and docs for full details on this change.
• Other changes
• feat(ui): add improved prompt ui with better versioning by @RichardKruemmel in https://github.com/langfuse/langfuse/pull/961
• feat(ui): filtering by scores to the generations table in https://github.com/langfuse/langfuse/pull/880
• feat: add new openai model prices by @maxdeichmann in https://github.com/langfuse/langfuse/pull/967
• feat(db): improve seeding script for prompts by @RichardKruemmel in https://github.com/langfuse/langfuse/pull/965
• fix(security): add validation for html in inputs by @RichardKruemmel in https://github.com/langfuse/langfuse/pull/927
• fix(sessions): composite ids by @marcklingen in https://github.com/langfuse/langfuse/pull/946
• fix(ui): retrieve prompts created via API by @maxdeichmann in https://github.com/langfuse/langfuse/pull/963
• fix: error log for api prompts by @RichardKruemmel in https://github.com/langfuse/langfuse/pull/966
• chore(deps): bump dependencies in https://github.com/langfuse/langfuse/pull/970, https://github.com/langfuse/langfuse/pull/936, https://github.com/langfuse/langfuse/pull/979, https://github.com/langfuse/langfuse/pull/986, https://github.com/langfuse/langfuse/pull/983, https://github.com/langfuse/langfuse/pull/985
• refactor: typing of AutoCompleteOption by @marcklingen in https://github.com/langfuse/langfuse/pull/978
• refactor: db logging in dev mode by @maxdeichmann in https://github.com/langfuse/langfuse/pull/952

Full Changelog: https://github.com/langfuse/langfuse/compare/v1.34.1...v2.0.0