GPT-3.5 Turbo

by OpenAI

GPT-3.5 Turbo is OpenAI's legacy general-purpose model, tuned for fast, low-cost text and code generation. It handles chat, summarization, classification, and simple coding tasks, and supports function calling and structured outputs for application integration. The model carries a context window of roughly 16,000 tokens, enough for moderate-length conversations and documents. It established the conversational pattern that later OpenAI models built on. GPT-3.5 Turbo is now considered legacy, with OpenAI steering new work toward newer, more capable, multimodal models. It remains a reasonable choice for high-volume, latency-sensitive tasks where deep reasoning is not required.

Key info

Input
Output
Features
Context window
16K
Max output
4K
Input price
$0.50 /1M
Output price
$1.50 /1M
  • EU residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

GPT-3.5 Turbo runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
AzureEUEnterpriseNo$0.50$1.50

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting GPT-3.5 Turbo has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Azure β€” SwedenπŸ‡ΈπŸ‡ͺ

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
Not applicable β€” data stays in EU

Get started

Call GPT-3.5 Turbo through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "azure/gpt3-eu",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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GPT-3.5 Turbo by OpenAI β€” pricing, benchmarks, EU hosting | Opper AI