Last refreshed 2026-04-19. Next refresh: weekly.
Why use Firefunction V1 on Fireworks AI?
Fireworks AI offers Firefunction V1 with pay-as-you-go pricing at $0.50/1M input tokens. Fireworks AI offers a generative AI platform as a service, focusing on rapid product iteration and cost-efficient AI deployment.
Setup recipe
Python + curlpip install openaiexport FIREWORKS_API_KEY=...import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["FIREWORKS_API_KEY"],firefunction-v1Request example
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["FIREWORKS_API_KEY"],
base_url="https://api.fireworks.ai/inference/v1"
)
response = client.chat.completions.create(
model="firefunction-v1",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Fireworks model IDs use "accounts/fireworks/models/{model-name}" format, e.g. "accounts/fireworks/models/llama4-scout-instruct-basic" or "accounts/fireworks/models/deepseek-r1".
- The examples expect FIREWORKS_API_KEY; rename it only if your application config maps the new variable.
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.50 |
| Output tokens | $0.50 |
Capabilities
No model capability flags are currently sourced.
About Firefunction V1
FireFunction V1 is a cutting-edge function-calling large language model developed by Fireworks AI. It is tailored for real-world applications that demand structured information generation and decision-making through routing. The model boasts near GPT-4 level quality in handling such tasks and processes data approximately four times faster than GPT-4 when operated on the Fireworks platform. A standout feature is its "any" parameter in tool_choice, ensuring a persistent selection of functions. Additionally, it offers seamless integration due to API compatibility with OpenAI's function-calling API, allowing smooth incorporation into existing systems. Although it excels in single-turn request routing and structured data extraction, it is not optimized for multi-turn chats or handling parallel/nested function calls. The model was briefly available for free during a beta phase.
FAQ
What does Firefunction V1 cost on Fireworks AI?
On Fireworks AI, Firefunction V1 costs $0.50 per 1M input tokens and $0.50 per 1M output tokens.
What is the context window for Firefunction V1 on Fireworks AI?
Firefunction V1 supports a 8,000 token context window on Fireworks AI.
Who created Firefunction V1?
Firefunction V1 was created by Fireworks AI as part of the Firefunction model family.
Is Firefunction V1 open source?
Firefunction V1's open source status is unknown in the seed data.