LiteLLMModels

Phi 2 3B API Pricing

As of October 10, 2026, Phi 2 3B costs $0.10 per 1M input tokens and $0.10 per 1M output tokens on Fireworks AI. It has a 2,048-token context window and returns up to 2,048 tokens per response.

By MicrosoftModel ID fireworks_ai/accounts/fireworks/models/phi-2-3bPrices updated Checked
Input
$0.10 / 1M tokens
Output
$0.10 / 1M tokens
Context window
2,048 tokens
Max output
2,048 tokens
Providers
1
Added to LiteLLM
December 2025

Phi 2 3B pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputContext
Fireworks AIfireworks_ai/accounts/fireworks/models/phi-2-3b$0.10$0.102K

What Phi 2 3B costs in practice

1,000 requests with 2,000 input and 500 output tokens each

Fireworks AI$0.25

Use Phi 2 3B with LiteLLM

Call Phi 2 3B through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="fireworks_ai/accounts/fireworks/models/phi-2-3b",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: phi-2-3b
    litellm_params:
      model: fireworks_ai/accounts/fireworks/models/phi-2-3b
      api_key: os.environ/FIREWORKS_AI_API_KEY
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "phi-2-3b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Phi 2 3B FAQ

How much does Phi 2 3B cost?

Phi 2 3B costs $0.10 per 1M input tokens and $0.10 per 1M output tokens on Fireworks AI.

What is the context window of Phi 2 3B?

Phi 2 3B has a 2,048-token context window and returns up to 2,048 tokens per response.

Which providers offer Phi 2 3B?

Phi 2 3B is available from Fireworks AI through LiteLLM, using the model name fireworks_ai/accounts/fireworks/models/phi-2-3b.

How do I call Phi 2 3B with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="fireworks_ai/accounts/fireworks/models/phi-2-3b", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

When did LiteLLM add Phi 2 3B?

Phi 2 3B was added to LiteLLM's model price file in December 2025.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request.

LiteLLM docs: Fireworks AI.

Provider pages: Fireworks AI.