reasoning benchmark
BFCL
The Berkeley Function Calling Leaderboard (BFCL) is the first comprehensive and executable function call evaluation dedicated to assessing Large Language Models' ability to invoke functions. It evaluates serial and parallel function calls across multiple programming languages (Python, Java, JavaScript, REST API) using a novel Abstract Syntax Tree (AST) evaluation method. The benchmark consists of over 2,000 question-function-answer pairs covering diverse application domains and complex use cases including multiple function calls, parallel function calls, and multi-turn interactions.
Updated Aug 11, 2026
Models11
Model coverage11
MetricScore
EvidenceB
BFCL Ranking
Higher score ranks better on this benchmark.
| 01 | ME | 88.5% | 100.0% | 11 | C | |
| 02 | ME | 84.8% | 90.0% | 11 | C | |
| 03 | ME | 76.1% | 80.0% | 11 | C | |
| 04 | AM Nova 2 SonicAmazon | 74.5% | 70.0% | 11 | C | |
| 05 | AC | 70.8% | 60.0% | 11 | C | |
| 06 | AC | 70.3% | 50.0% | 11 | C | |
| 07 | AC | 69.1% | 40.0% | 11 | C | |
| 08 | AMNova ProAmazon | 68.4% | 30.0% | 11 | C | |
| 09 | AMNova LiteAmazon | 66.6% | 20.0% | 11 | C | |
| 10 | AC | 66.4% | 10.0% | 11 | C | |
| 11 | AMNova MicroAmazon | 56.2% | 0.0% | 11 | C |
BFCL Score Distribution
A closer view of the leading scores on this benchmark.
BFCL Highlights
The leading models and scores on this benchmark.
What is BFCL?
What BFCL measures and how its scores work.
The Berkeley Function Calling Leaderboard (BFCL) is the first comprehensive and executable function call evaluation dedicated to assessing Large Language Models' ability to invoke functions. It evaluates serial and parallel function calls across multiple programming languages (Python, Java, JavaScript, REST API) using a novel Abstract Syntax Tree (AST) evaluation method. The benchmark consists of over 2,000 question-function-answer pairs covering diverse application domains and complex use cases including multiple function calls, parallel function calls, and multi-turn interactions.
Scores are shown in ratio. This benchmark is not independently verified and has an evidence level of B.
- Family
- BFCL
- Modality
- text
- Primary category
- reasoning
- Score direction
- higher
- LLMBoard eligible
- Yes
- Evaluation key
- bfcl|llm-stats-current
Benchmark scores retain their original unit. Overall score eligibility is shown separately.
FAQ
Common questions about BFCL.
Which model scores highest on BFCL?
Llama 3.1 405B Instruct is currently ranked first with 88.5%.
What does BFCL measure?
The Berkeley Function Calling Leaderboard (BFCL) is the first comprehensive and executable function call evaluation dedicated to assessing Large Language Models' ability to invoke functions. It evaluates serial and parallel function calls across multiple programming languages (Python, Java, JavaScript, REST API) using a novel Abstract Syntax Tree (AST) evaluation method. The benchmark consists of over 2,000 question-function-answer pairs covering diverse application domains and complex use cases including multiple function calls, parallel function calls, and multi-turn interactions.
Is a higher score better?
Yes. Higher values rank better for this benchmark.
How many models are compared?
11 model results are currently shown.
Does this benchmark affect the overall score?
Yes. This benchmark can contribute to the current LLMBoard capability score.