Last refreshed 2026-05-19. Next refresh: weekly.
Why use Yi 9B on Fireworks AI?
Fireworks AI offers Yi 9B with pay-as-you-go pricing at $0.20/1M 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"],yi-9bRequest 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="yi-9b",
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 | $0.20 |
| Output tokens | $0.20 |
Capabilities
No model capability flags are currently sourced.
About Yi 9B
9B enhanced bilingual model from the Yi series trained on 3.9T tokens with significant improvements in coding and math tasks. Offers strong dual-language performance for production applications.
FAQ
What does Yi 9B cost on Fireworks AI?
On Fireworks AI, Yi 9B costs $0.2 per 1M input tokens and $0.2 per 1M output tokens.
What is the context window for Yi 9B on Fireworks AI?
Yi 9B supports a 4,000 token context window on Fireworks AI.
Who created Yi 9B?
Yi 9B was created by 01.AI as part of the Yi (2023/11) model family.
Is Yi 9B open source?
Yi 9B's open source status is unknown in the seed data.