FireFunction V2: Fireworks Function Calling Model
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FireFunction is a state-of-the-art function calling model with a commercially viable license. View detailed info in our announcement blog. Key info and highlights:
Comparison with other models:
- Competitive with GPT-4o at function-calling, scoring 0.81 vs 0.80 on a medley of public evaluations
- Trained on Llama 3 and retains Llama 3’s conversation and instruction-following capabilities, scoring 0.84 vs Llama 3’s 0.89 on MT bench
- Significant quality improvements over FireFunction v1 across the broad range of metrics
General info:
🐾 Successor of the FireFunction model
🔆 Support of parallel function calling (unlike FireFunction v1) and good instruction following
💡 Hosted on the Fireworks platform at < 10% of the cost of GPT 4o and 2x the speed
Intended Use and Limitations
Supported usecases
The model was tuned to perfom well on a range of usecases including:
- general instruction following
- multi-turn chat mixing vanilla messages with function calls
- single- and parallel function calling
- up to 20 function specs supported at once
- structured information extraction
The model has an 8k context window, like Llama 3
Out-of-Scope Use
The model was not optimized for the following use cases:
- 100+ function specs
- nested function calling
Metrics
| Benchmark | Firefunction v1 | Firefunction v2 | Llama 3 70b Instruct | Gpt-4o |
|---|---|---|---|---|
| Gorilla simple | 0.91 | 0.94 | 0.925 | 0.88 |
| Gorilla multiple_function | 0.92 | 0.91 | 0.86 | 0.91 |
| Gorilla parallel_function | 0 | 0.9 | 0.86 | 0.89 |
| Gorilla parallel_multiple_function | 0 | 0.8 | 0.615 | 0.72 |
| Nexus parallel | 0.38 | 0.53 | 0.3 | 0.47 |
| Mtbench | 0.73 | 0.84 | 0.89 | 0.93 |
| Average | 0.49 | 0.82 | 0.74 | 0.8 |
Example Usage
See documentation for more detail.
from transformers import AutoModelForCausalLM, AutoTokenizer
import json
from datetime import datetime
device = "cuda" # the device to load the model onto
model = AutoModelForCausalLM.from_pretrained("fireworks-ai/firefunction-v2", device_map="auto")
tokenizer = AutoTokenizer.from_pretrained("fireworks-ai/firefunction-v2")
function_spec = [
{
"name": "get_stock_price",
"description": "Get the current stock price",
"parameters": {
"type": "object",
"properties": {
"symbol": {
"type": "string",
"description": "The stock symbol, e.g. AAPL, GOOG"
}
},
"required": [
"symbol"
]
}
},
{
"name": "check_word_anagram",
"description": "Check if two words are anagrams of each other",
"parameters": {
"type": "object",
"properties": {
"word1": {
"type": "string",
"description": "The first word"
},
"word2": {
"type": "string",
"description": "The second word"
}
},
"required": [
"word1",
"word2"
]
}
}
]
functions = json.dumps(function_spec, indent=4)
messages = [
{'role': 'system', 'content': 'You are a helpful assistant with access to functions. Use them if required.'},
{'role': 'user', 'content': 'Hi, can you tell me the current stock price of google and netflix?'}
]
now = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
model_inputs = tokenizer.apply_chat_template(messages, functions=functions, datetime=now, return_tensors="pt").to(model.device)
generated_ids = model.generate(model_inputs, max_new_tokens=128)
decoded = tokenizer.batch_decode(generated_ids)
print(decoded[0])
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