System or package
Mechanism
Strongest evidence in this review
Limit or missing evidence
Source
Open-source tool + CHI paper
Data Formulator
Natural language for transformation; GUI for explicit encodings; visible tables, code, branches, and reversion.
Best signal Eight people reproduced 16 charts and 12 nontrivial transforms.
Supports authoring and verification behavior—not long-term analytical correctness.
Repository ↗
Research prototype + preprint
Raiven
Metadata → RaivenDSL → deterministic compiler for linked 2D, 3D, and tabular views.
Best signal 100% compile and .988 VMPC on 100 fully specified prompts.
Most advantage is in SciVis; the task specifies the target view rather than discovering the question.
Paper ↗
Research architecture + preprint
NL2Dashboard
Compact IR separates analysis, content, and layout; atomic edits avoid full-dashboard rewrites.
Best signal Completed all edit tasks across seven modification classes with low output-token ratios.
Ten tables, LLM judge, unmatched model interfaces, and no user study.
Paper ↗
Research system + ACL paper
nvAgent
Schema processor, sketch-and-fill VQL composer, and execution-guided validator.
Best signal +7.88 / +9.23 pass-rate points on single- / multi-table VisEval.
The composer drives most of the gain; processor value depends on model and environment.
Paper ↗
Research prototype + preprint
DashChat
Pattern retrieval, a DSL, focused calls, chat plus structured edit bubbles, and visual history.
Best signal 100% executable and 94% spec consistency on 50 prompts; 28-person study.
Mock-data prototype tasks do not establish production analytics quality.
Paper ↗
Open-source framework
Lumen
Coordinator routes to SQL, Vega-Lite, Deck.gl, source, table, and validation agents over serializable pipelines.
Best signal Inspectable implementation, deterministic profiling, and real capability boundaries.
No persuasive comparative efficacy study; one inspected validation path can fail open.
Repository ↗
Open-source research toolkit
LIDA
Summarization, persona-conditioned goals, chart-code generation, model scoring, repair, and recommendation.
Best signal Influential inspectable baseline for a modular prompt pipeline.
The evaluator does not inspect the final rendered image or create regression evidence.
Repository ↗
Research method + preprint
PlotGen
Planner and code generator followed by numeric, lexical, and visual feedback agents.
Best signal 65.67 on MatPlotBench versus 61.16 and 48.86 baselines.
No equal-budget baseline; heavy VLM use and reporting inconsistencies obscure the causal mechanism.
Paper ↗
Research method + preprint
NL4DV-LLM
Model emits an inspectable analytic specification and can preserve multiple interpretations of ambiguous prompts.
Best signal 87.02% across 740 queries versus 64.05% for rule-based NL4DV.
Older-model evidence; valid syntax does not guarantee correct binding.
Paper ↗
Benchmark + browser executor + judge
DashArena
Agent authors a dashboard and interaction trajectory; Playwright replays it; a calibrated judge sees task, schema, states, and execution evidence.
Best signal 234 tasks / 14 clusters; interaction evidence adds 8.1 points of human agreement.
Tableau-seed-biased, partial authored trajectories, and no reader-outcome measure.
Paper ↗
Skill package inside an open-source tool
Vizro flow
Six staged skills, required specs and tests, AST checks, action enumeration, Playwright, and a test receipt.
Best signal Strongest mechanics of the skill packages inspected.
Seven fixtures and no aggregate held-out or independent human outcome.
Package ↗
Agent skill package
OpenAI visualize-data
Question and takeaway first, explicit chart contract, data sufficiency, delivery routing, and final-context QA.
Best signal Broadest inspected contract and delivery checklist.
No behavioral comparison of an agent with and without the skill.
Skill ↗
Agent skills + reference corpus
AntV skills
Strict G2/G6/X6 version constraints plus hybrid retrieval over a large reference corpus.
Best signal Largest included retrieval and code benchmark in the inspected skills.
Saved runs did not include render results; “success” mostly means a response completed.
Package ↗
Skill family + paired evaluation
SciVisAgentSkills
Version-pinned guides for four scientific tool families, with headless execution and render–inspect–adjust loops.
Best signal Quality improved in all ten suite-by-agent comparisons across 108 tasks.
Author-built and author-evaluated, scientific tasks only; one completion measure fell and no independent or reader-outcome test was found.
Study ↗
Two instruction-only skill packages
Vega + chart primers
Renderer syntax and examples in Markdown Viewer; long chart-literacy and accessibility prose in claude-skillz.
Best signal Useful surface adapters and a clean prompt-only baseline.
No fixtures, data checks, render loop, or outcome evaluation.
Vega skill ↗
Commercial BI feature
Power BI Copilot
Selects tables, fields, measures, and charts from a semantic model; output remains editable in native tools.
Transfer Bind generation to governed measures and retain direct author control.
Current capability documentation, not comparative accuracy or user-outcome evidence.
Documentation ↗
Commercial BI feature
Tableau Agent
Uses connected-source fields, metadata, sample values, and worksheet state; results stay directly editable.
Transfer Keep agent scope close to native authoring state and make direct manipulation the recovery path.
The vendor says to review results and documents material current limitations.
Documentation ↗
Commercial BI feature
Looker Conversational Analytics
Grounds requests in LookML, permissions, descriptions, samples, glossaries, and optional verified queries.
Transfer Maintained semantic custody beats a generic analyst persona.
No public evidence here isolates which grounding feature improves decisions; outputs still require validation.
Documentation ↗