OpenAI Evals vs Tables.so: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of OpenAI Evals and Tables.so — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
OpenAI Evals
OpenAI
Open-source framework and registry for creating, running, and comparing evaluations of large language models and LLM systems.
Key features
- Registry of Benchmarks: A curated, open registry of existing evals and benchmarks for common LLM tasks, enabling quick comparison across models and tasks.
- Custom & Private Evals: Author and run custom evals using your own datasets and grading logic; private evals let teams evaluate proprietary workflows without exposing data publicly.
- Grader Framework: Build rubric-driven automated graders, model-based graders, or human-in-the-loop grading pipelines to produce consistent, repeatable scoring.
- CLI/SDK & API Integration: Python-first SDK and CLI that integrate with the OpenAI API, support threaded execution, detailed logs, and programmatic control for batch runs.
- Continuous Evaluation (CE): Integrate evals into development workflows to run on changes, detect regressions, and track performance over time across model versions.
- Detailed Reporting & Metrics: Produces sample-level logs, aggregated counts and metrics, and final reports that summarize correctness, rubric scores, and other custom metrics.
- Extensibility & Reproducibility: Templates and examples in the repository make it straightforward to extend eval types (e.g., classification, generation, instruction following) and reproduce results.
- License & Contribution Controls: Public contributions are MIT-licensed with clear expectations about contributor rights and OpenAI’s reserved rights to use contributed data for product improvements.
- Open-source registry of prebuilt evaluation suites (benchmarks) for LLMs
- Author and run custom evals and private evals using your own data
- Integration with OpenAI API and Evals API / dashboard for running and tracking evals
- Support for structured outputs and JSON schema-based graders
- Automated grader / LLM-as-judge capabilities to estimate human judgments
- CLI and Python-based tooling; examples and Jupyter notebook demos
- Threaded and batched execution for running large eval sets locally
- Support for continuous evaluation (CE) workflows and comparison across runs
- MIT-licensed contributions with requirement to have rights for uploaded data
- Logging and reporting features with summary counts and final reports
Best for
- Benchmarking Models: Run the registry or custom evals to compare multiple model families or model versions on shared task suites and metrics.
- Prompt Optimization: Use dataset-driven evals to measure the effect of prompt edits and automatically iterate toward higher-quality prompts.
- Continuous QA for Deployments: Integrate evals into CI/CD to run continuous evaluation that catches regressions when changing prompts, models, or system components.
- Private Workflow Validation: Create private evals using internal data to validate an LLM’s behavior on organization-specific tasks without sharing sensitive data publicly.
- Automated Grading & Labeling: Build automated graders and rubric pipelines to approximate expert judgments, triage outputs for human review, and scale label generation.
- Research & Method Development: Use the open registry and tooling to prototype new evaluation methodologies, reproducible benchmarks, and shareable tasks with the community.
- Comparative Performance Analysis: Track and report differences in accuracy, rubric scores, and failure modes across model releases for decision-making and model selection.
- Benchmarking and comparing LLM models on task-specific datasets
- Building private evaluation suites that reflect production workflows without exposing data
- Automated grading and preference estimation to approximate human ratings
- Continuous evaluation in CI to detect regressions and nondeterministic behavior
- Measuring model performance on real-world occupation or task benchmarks (e.g., GDPval)
- Developing and validating model improvements prior to deployment
Tables.so
Tables
AI prospecting platform that searches 300M+ contacts, enriches leads with verified emails and phone numbers, and researches every prospect.
Key features
- AI Search: Describe your ideal customer in plain language and get a scored, qualified lead list in minutes instead of hand-building filters.
- Contact Database: Search over 300 million contacts and companies across 30+ criteria including title, seniority, technology stack, and geography.
- Verified Contact Data: Reveal verified work emails, mobile numbers, and direct dials, with credits charged only when data is actually found.
- Custom AI Research Columns: Add scores, dropdowns, and yes/no fields answered by AI, each with its reasoning and source citations.
- Claude MCP Server: Run agentic prospecting workflows inside Claude, including reading local lead lists and enriching them with live data.
- Chrome Extension: Reveal emails and phone numbers on any LinkedIn profile and push contacts straight to your CRM.
- CRM Sync: Export whole lists or cherry-pick individual leads into your CRM and keep records in sync as they change.
- ICP Scoring: Every prospect is scored for fit against your ideal customer profile so reps focus on the highest-value accounts.
Best for
- An outbound SDR team builds a targeted prospect list for a new segment without hours of manual scraping.
- A founder-led sales motion needs verified mobile numbers and emails for decision makers at specific company types.
- A RevOps lead enriches an existing CRM export with missing contact details and firmographic data.
- A marketer researches which prospects use a given technology — Shopify, WooCommerce, Magento — before running a campaign.
- A seller preparing for a call pulls AI-researched context on a prospect's business, hiring, and priorities.
- An agent-driven workflow in Claude reads a local CSV of leads and enriches each row automatically via MCP.