GPT-3.5 Turbo API Pricing

GPT-3.5 Turbo pricing by provider

11 listings across 4 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

What GPT-3.5 Turbo costs in practice

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

GPT-3.5 Turbo features

• Function calling
• Parallel tool calls
• Prompt caching

Use GPT-3.5 Turbo with LiteLLM

Call GPT-3.5 Turbo 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.

from litellm import completion

response = completion(
    model="gpt-3.5-turbo",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: gpt-3.5-turbo
    litellm_params:
      model: gpt-3.5-turbo
      api_key: os.environ/OPENAI_API_KEY

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gpt-3.5-turbo",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT-3.5 Turbo FAQ

More OpenAI models

• GPT-3.5 Turbo 16K$3 / $4 per 1M tokens
• GPT-3.5 Turbo Instruct$1.50 / $2 per 1M tokens
• GPT-6.1 Sol$2 / $10 per 1M tokens
• GPT-6 Luna$0.10 / $0.50 per 1M tokens
• GPT-6 Sol$2 / $10 per 1M tokens
• GPT-5.4 High$2.50 / $15 per 1M tokens
• GPT-5.4 Low$2.50 / $15 per 1M tokens
• GPT-5.6 Sol Disc$4 / $20 per 1M tokens