NVIDIA-NeMo/Evaluator

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# NeMo Evaluator [![License](https://img.shields.io/badge/License-Apache%202.0-brightgreen.svg)](https://github.com/NVIDIA-NeMo/Evaluator/blob/main/LICENSE) [![Python 3.12-3.13](https://img.shields.io/badge/python-3.12--3.13-green)](https://www.python.org/downloads/) [![Code style: ruff](https://img.shields.io/badge/code%20style-ruff-000000.svg)](https://github.com/astral-sh/ruff) [**Documentation**](https://docs.nvidia.com/nemo/evaluator/0.3.0/) | [**GitHub**](https://github.com/NVIDIA-NeMo/Evaluator) | [**Issues**](https://github.com/NVIDIA-NeMo/Evaluator/issues) LLM evaluation framework with benchmark environments, pluggable solvers, composable interceptor proxy, and multi-format reporting. --- ## Install ```bash pip install -e . # core pip install -e ".[scoring]" # + sympy for symbolic math pip install -e ".[stats]" # + scipy (regression analysis) pip install -e ".[scoring,stats]" # + sympy + scipy for confidence intervals pip install -e ".[harbor]" # + Harbor agents (OpenHands, Terminus-2) pip install -e ".[inspect]" # + Inspect AI log export pip install -e ".[all]" # common runtime integrations ``` ## Quick Start ```bash export NVIDIA_API_KEY="your-api-key-here" # Run a benchmark from the CLI nel eval run --bench mmlu \ --model-url https://integrate.api.nvidia.com/v1 \ --model-id nvidia/nemotron-3-super-120b-a12b \ --api-key $NVIDIA_API_KEY \ --repeats 3 --max-problems 100 # Run from a YAML config nel eval run config.yaml nel eval run config.yaml --resume # Generate a report nel eval report ./eval_results/ -f markdown -o report.md ``` ## Benchmarks 17 built-in benchmarks plus external harness integrations: | Benchmark | Type | Scoring | |-----------|------|---------| | mmlu, mmlu_pro, gpqa | Multichoice | `multichoice_regex` | | gsm8k, math500, mgsm | Math | `numeric_match` / `answer_line` | | drop, triviaqa | QA | `fuzzy_match` | | humaneval | Code | `code_sandbox` (Docker) | | simpleqa, healthbench | Judge | `needs_judge` | | pinchbench | Agentic | `code_sandbox` / `needs_judge` | | xstest | Safety | `needs_judge` | | terminal-bench-hard, terminal-bench-v1 | Terminal tasks | Task test harness | | nmp_harbor | Agentic NMP | Harbor task tests | External environments via URI schemes: `lm-eval://`, `skills://`, `vlmevalkit://`, `gym://`, `harbor://`, `container://`. ## Adapter Proxy Built-in local interceptor proxy for LLM traffic. Intercepts all agent-to-model requests for caching, logging, payload modification, turn limiting, and custom transformations — no external dependencies required. ```yaml services: nemotron: type: api url: https://integrate.api.nvidia.com/v1/chat/completions protocol: chat_completions model: nvidia/nemotron-3-super-120b-a12b api_key: ${NVIDIA_API_KEY} proxy: request_timeout: 600 interceptors: - name: turn_counter config: max_turns: 100 - name: drop_params config: params: [max_tokens] verbose: true ``` **Available interceptors:** | Interceptor | Stage | Description | |-------------|-------|-------------| | `endpoint` | request→response | Async HTTP forwarding with retry, backoff, connection pooling | | `caching` | request→response | Disk-backed SQLite cache with canonical keys | | `turn_counter` | request | Per-session turn counting with budget injection | | `drop_params` | request | Strip named parameters from requests | | `modify_tools` | request | Add/remove properties in tool schemas | | `system_message` | request | Inject/replace/prepend system messages | | `payload_modifier` | request | Recursive parameter add/remove/rename | | `raise_client_errors` | response | Convert 4xx to exceptions | | `log_tokens` | response | Log token usage per request | | `response_stats` | response | Aggregate timing and token statistics | | `reasoning` | response | Normalize `<think>` blocks to `reasoning_content` | | `progress_tracking` | response | Progress counter with optional webhook | | `logging` | request + response | Request/response logging with body preview | ## Solvers Configured via `solver.type` in each benchmark: | Solver Type | Config `type` | Use Case | |-------------|---------------|----------| | SimpleSolver | `simple` | Standard chat/completion/VLM (default) | | HarborSolver | `harbor` | Harbor agents (OpenHands, Terminus-2, etc.) | | ToolCallingSolver | `tool_calling` | Tool-use with Gym resource servers | | GymDelegationSolver | `gym_delegation` | Delegate to nemo-gym server | | OpenClawSolver | `openclaw` | OpenClaw CLI agent | | ContainerSolver | `container` | Legacy container harness | ## Export Evaluation results can be exported to experiment trackers and compatible formats: ```yaml output: export: [inspect, wandb, mlflow] ``` - **`inspect`** — Produces `inspect_ai`-compatible `EvalLog` JSON files. Install with `pip install -e ".[inspect]"`. - **`wandb`** / **`mlflow`** — Push scores and artifacts to experiment trackers. Install with `pip install -e ".[export]"`. ## BYOB (Bring Your Own Benchmark) ```python from nemo_evaluator import benchmark, scorer, ScorerInput, exact_match @benchmark(name="my-bench", dataset="hf://my-org/data?split=test", prompt="Q: {question}\nA:", target_field="answer") @scorer def my_scorer(sample: ScorerInput) -> dict: return exact_match(sample) ``` ## Sandboxes Per-problem Docker/SLURM sandboxes for code execution and agentic evaluation. Two modes: **stateful** (shared sandbox for solve + verify) and **stateless** (separate agent and verification containers with shared volume). ## SLURM Pyxis/Enroot-based execution with auto-selected container images per URI scheme. Uses `node_pools` topology for flexible resource allocation across model, agent, and sandbox nodes. | Tag suffix | Contents | |------------|----------| | `:latest` | Base + gym + vlmevalkit | | `:latest-lm-eval` | + lm-evaluation-harness | | `:latest-skills` | + NeMo Skills | | `:latest-full` | All harnesses | ## CLI | Command | Purpose | |---------|---------| | `nel eval run` | Run evaluation (name or YAML) | | `nel eval merge <dir>` | Merge sharded results | | `nel eval report <dir>` | Generate reports | | `nel list` | List benchmarks | | `nel serve -b <name>` | Serve as HTTP endpoint | | `nel validate -b <name>` | Sanity check | | `nel export <paths> --dest <exporter>` | Export bundles | | `nel cache-sqsh <image>` | Build a SLURM `.sqsh` cache image | | `nel report <dir>` | Generate multi-benchmark reports | | `nel compare` | Paired run comparison | | `nel gate` | Multi-benchmark quality gate | | `nel config` | Persistent user config | | `nel package` | Containerize BYOB benchmark | ## Compare Results Between Runs Use `nel compare` when you want to compare two runs of the same benchmark and inspect score deltas, flips, and statistical evidence. ```bash nel compare ./results/baseline ./results/candidate --strict ``` Full tutorial: [`docs/tutorials/compare.md`](docs/tutorials/compare.md) ## Implement Quality Gates Use `nel gate` when you want one `GO / NO-GO / INCONCLUSIVE` decision across multiple benchmarks from an explicit policy file. ```bash nel gate ./results/baseline ./results/candidate \ --policy gate_policy.yaml \ --strict \ --output gate_report.json ``` Full tutorial: [`docs/tutorials/quality-gate.md`](docs/tutorials/quality-gate.md) ## Examples See [`examples/configs/`](examples/configs/) for 25+ end-to-end configs covering all solver types, verification methods, and execution backends. ## License [Apache 2.0](https://github.com/NVIDIA-NeMo/Evaluator/blob/main/LICENSE)

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2026-10-01

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