bfcl

BFCL — Berkeley Function-Calling Leaderboard

A production-ready, faithful implementation of the Berkeley Function-Calling Leaderboard benchmark, designed to drop into the elizaOS benchmark harness.

The package vendors the relevant Apache-2.0 BFCL evaluator pieces (multi-turn runtime + tool implementations) with attribution — see executable_runtime/NOTICE.

Supported categories

Group	Category	Scoring path	Network
Non-live single-turn	simple, multiple, parallel, parallel_multiple, relevance, irrelevance, sql, java, javascript	AST equality	no
Non-live single-turn — gated	rest_api	AST equality (currently no live REST runner)	yes
Live (user-contributed)	live_simple, live_multiple, live_parallel, live_parallel_multiple, live_relevance, live_irrelevance	AST equality	no
Multi-turn	multi_turn_base, multi_turn_miss_func, multi_turn_miss_param, multi_turn_long_context	Executable runtime (state equality)	no
Agentic — web_search	web_search_base, web_search_no_snippet	Executable runtime	yes
Agentic — memory	memory_kv, memory_vector, memory_rec_sum	(skipped — see below)	no
Non-scoring	format_sensitivity	n/a	n/a

Network-gated categories

Categories that require live network / credentials are gated behind the --enable-network CLI flag. Without it, those tests are reported in the skipped_no_credentials bucket and excluded from the accuracy denominator with a logged warning — they are not silently failed.

Currently network-gated:

• rest_api
• web_search_base, web_search_no_snippet

# Run without network — REST / web_search are skipped
python -m benchmarks.bfcl run --sample 200

# Opt in to network-backed scoring
python -m benchmarks.bfcl run --sample 200 --enable-network

Memory categories

Memory categories (memory_kv, memory_vector, memory_rec_sum) depend on additional upstream scaffolding (snapshot dirs, prereq conversation files, bfcl_eval.utils helpers) that we do not vendor. They are reported in the skipped_unsupported bucket. To enable, install bfcl-eval from upstream and the runtime will fall through to the upstream helpers.

Evaluation

Single-turn

AST equality between the predicted and ground-truth call list, using the faithful BFCL AST checker logic. The AST checker preserves a small set of intentional quirk-tolerance fixes (annotated in evaluators/ast_evaluator.py) — these are documented overrides of upstream behaviour that the upstream issue tracker also reports as undesirable.

Multi-turn

Per-turn agent loop:

1. Feed the current user turn (plus any prior assistant + tool result messages) into the agent.
2. Decode the upstream-canonical python-list-of-calls from the agent's response (decode_python_calls).
3. Execute the calls against a per-test ExecutableRuntime that holds the vendored upstream tool instances (GorillaFileSystem, MathAPI, TwitterAPI, ...).
4. Repeat for the next turn (state persists across turns).
5. At the end, also execute the ground-truth trajectory against a fresh runtime and compare final per-class instance state.

Executable evaluator

The previous evaluator used synthetic always-success mock handlers — exec_accuracy was always 1.0 regardless of the model's calls. That behaviour is removed. The new evaluator actually invokes the upstream tool implementations and compares output state. Unregistered functions return failure, NOT auto-success.

CLI

# List available models / providers
python -m benchmarks.bfcl models

# Sample run (50 stratified tests)
python -m benchmarks.bfcl run --sample 50

# Run a specific category set
python -m benchmarks.bfcl run --categories simple,multiple,multi_turn_base

# Full benchmark, with network-gated categories enabled
python -m benchmarks.bfcl run --full --enable-network

# Local data path (avoids HuggingFace)
python -m benchmarks.bfcl run --local-data ./data/bfcl

# Run all + show baselines
python -m benchmarks.bfcl info --baselines

Reporting

The run summary now distinguishes:

• total_tests — number of tests that contributed to accuracy.
• passed_tests / failed_tests — among total_tests.
• skipped_tests — excluded from accuracy.
• skipped_by_reason — bucketed by status:
  • skipped_no_credentials
  • skipped_no_ground_truth
  • skipped_unsupported

License

Vendored upstream sources are Apache License 2.0 (Berkeley/Gorilla). See executable_runtime/NOTICE for attribution.