Chat GPT 3.5 Turbo API

openai/gpt-3.5-turbo
Fast and cost-efficient OpenAI model for a wide range of text generation and conversation tasks.
Context
16K tokens
Input
$0.65 / 1M tokens
Output
$1.95 / 1M tokens
Released
Aug 7, 2025

How to use Chat GPT 3.5 Turbo API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to openai/gpt-3.5-turbo.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "openai/gpt-3.5-turbo",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "openai/gpt-3.5-turbo",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-3.5-turbo","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Chat GPT 3.5 Turbo API Pricing

TypePrice
Input
$0.65 / 1M tokens
Output
$1.95 / 1M tokens

Chat GPT 3.5 Turbo Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
Intelligence
5.5
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Coding
10.7
Composite score across standardised coding evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

Chat GPT 3.5 Turbo vs other models

ModelInputOutputContextBest for
$0.65 / 1M tokens
$1.95 / 1M tokens
16K tokens
Coding + agents
$6.5 / 1M tokens
$39 / 1M tokens
1M tokens
Reasoning + agents
$2.6 / 1M tokens
$13 / 1M tokens
1M tokens
Balanced coding + agents
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$0.65 / 1M tokens
$3.9 / 1M tokens
1M tokens
Reasoning + agents

Frequently asked questions

Chat GPT 3.5 Turbo has a 16,000 tokens context window.

Chat GPT 3.5 Turbo takes text as input and returns text.

Use openai/gpt-3.5-turbo as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Chat GPT 3.5 Turbo became available on August 7, 2025.

Chat GPT 3.5 Turbo is priced at input $0.65 / 1M tokens, output $1.95 / 1M tokens.

Yes, Chat GPT 3.5 Turbo can stream responses as they are generated.

Chat GPT 3.5 Turbo was built by OpenAI.

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