OpenAI
GPT-3.5 Turbo
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.
At a glance
- Input / 1M
- $0.50
- Output / 1M
- $1.50
- Context
- 16K
- Max output
- 4K
- Intelligence
- 5.5
- Released
- May 2023
Pricing
GPT-3.5 Turbo API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $0.50 |
|---|---|
| Output tokensPer 1M tokens | $1.50 |
| Cached input (read)Per 1M tokens | Not available |
| Cache writePer 1M tokens | Not available |
Chat message
2K in, 500 out
$1.75
per 1,000 requests
Coding task
30K in, 4K out
$21
per 1,000 requests
Long document summary
150K in, 2K out
$78
per 1,000 requests
Benchmarks
GPT-3.5 Turbo benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
5.5
Coding index
10.7
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 16K tokens
- Max output
- 4K tokens
- Input types
- Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- May 28, 2023
- Knowledge cutoff
- September 30, 2021
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
GPT-3.5 Turbo vs other models
See how GPT-3.5 Turbo stacks up head to head on price, benchmarks, and features.
VSGPT-3.5 Turbo vs GPT-4.1 Mini
OpenAI vs OpenAI
See comparisonVSGPT-3.5 Turbo vs GPT-4o-mini
OpenAI vs OpenAI
See comparisonVS
GPT-3.5 Turbo vs Devstral 2 2512
OpenAI vs Mistral
See comparisonVSGPT-3.5 Turbo vs GPT-4.1 Nano
OpenAI vs OpenAI
See comparisonVS
GPT-3.5 Turbo vs Sonar
OpenAI vs Perplexity
See comparisonVSGPT-3.5 Turbo vs GLM 4.5V
OpenAI vs Z.ai
See comparisonAlternatives
GPT-3.5 Turbo alternatives
Similar models worth considering, and where each one has the edge.
OpenAI
GPT-4.1 Mini
Mistral
Devstral 2 2512
OpenAI
GPT-4.1 Nano
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does GPT-3.5 Turbo cost?
GPT-3.5 Turbo costs $0.50 per 1M input tokens and $1.50 per 1M output tokens through the API. A typical chat message costs about $1.75 per 1,000 messages.
What is the context window of GPT-3.5 Turbo?
GPT-3.5 Turbo accepts up to 16K tokens of input and can write up to 4K tokens in a single response.
What is the best alternative to GPT-3.5 Turbo?
GPT-4.1 Mini from OpenAI is a strong alternative. It offers: higher intelligence score, larger 1.05m context, accepts image and file.
Can I use GPT-3.5 Turbo alongside other models?
Yes. Shortcut Chat sends one prompt to GPT-3.5 Turbo and any other models you pick at the same time, so you can compare answers side by side.
Try GPT-3.5 Turbo next to every other model.
Use GPT-3.5 Turbo alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.