Code
Real repositories, pinned to a commit.
Engineers work inside real repositories, pinned to a specific commit. Every task ships with a reference solution and is graded against hidden tests, rubrics and model judges.
Active collections
TB4-SoftwareHarbor format software engineering tasks against SOTA models.2000 · ~3 wks
TB4-ScienceHarbor format science tasks against SOTA models.350 · ~6 wks
FrontierCode 2.0Code graded on merge quality against maintainer rubrics.1000 · ~6 wks
DeepSWEReal-repo issues resolved end to end, with tests and a reference.180 · ~3 wks
SWEQnA AtlasRepo-level questions pinned to a commit. Rubric and LLM-judge graded.
RecExpert cam
RecNovice camMultimodal
Real tasks, on screen and in the world.
Experts and everyday users complete real tasks on screen or in the real world while we record every step, thought, interaction and word. Sessions run from minutes to days, with prompts, assets and human references attached.
Active collections
- Paired TrajectoriesExpert user guiding novice user on computer use tasks.1500 · ~2 wks
- Computer UseHobby-to-work computer use tasks across OS, file systems and code.300 · ~2 wks
- Long-Horizon TasksRecorded screen sessions with matched video and instruction tracks.800 · ~3 wks
- Egocentric TasksFirst-person video of household tasks, with a metadata schema.3500 · ~3 wks


Audio & speech
Unscripted speech, solo to multiparty.
Recorded solo, in pairs and in groups across up to 8 languages. Each session is segmented and transcribed, with a separate track per speaker.
Active collections
- SoloUnscripted solo sessions in specified languages.5000 · ~2 wks
- Multiparty Conversational2+ speaker group conversations in a single specified language.1000 · ~2 wks
- Multiparty, MultilingualMultiparty conversations with multiple languages and code-switching.750 · ~3 wks
- Parallel MultilingualSame pair recorded in English and their native language.1000 · ~3 wks
Trajectories
Professionals working with an AI assistant.
Real tasks, captured turn by turn through to the final output, with structured ratings on quality and effort.
Active collections
- Multi-turn PromptsProfessionals completing real world work, with all turns and outputs.500 · ~1 wk
- Documents - LegalLegal practitioners drafting commercial documents one to one with an AI assistant.2000 · ~1 wk
- EngineeringEngineers share AI prompt override .md files and explain the reasoning.1500 · ~3 wks
- Document CreationProfessionals drafting documents. Full session, tool calls and output.On request
- Document CollectionVerified, owned documents and context from consenting professionals.On request