Last refreshed 2026-05-11. Next refresh: weekly.
Why use GPT-3.5 Turbo (Instruct) on OpenRouter?
OpenRouter offers GPT-3.5 Turbo (Instruct) with pay-as-you-go pricing at $1.50/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare GPT-3.5 Turbo (Instruct) across 4 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: openai/gpt-3.5-turbo-instructopenai/gpt-3.5-turbo-instructRequest example
openai/gpt-3.5-turbo-instruct.Gotchas
- Use provider model ID "openai/gpt-3.5-turbo-instruct", not the LLMReference slug "gpt-3.5-turbo-instruct".
Compare GPT-3.5 Turbo (Instruct) Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Azure OpenAI | $1.50 | $2.00 |
| OpenAI API | $1.50 | $2.00 |
| Salesforce Einstein Generative AI | — | — |
| OpenRouter | $1.50 | $2.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.50 |
| Output tokens | $2.00 |
Capabilities
About GPT-3.5 Turbo (Instruct)
GPT-3.5 Turbo Instruct by OpenAI is designed to excel in precise instruction following and task completion, focusing on accuracy and clarity over conversational abilities. It offers key enhancements like efficient instruction adherence, reduced hallucination, and lower toxicity compared to previous models. Compatible with legacy completion endpoints, it retains the speed and affordability of the standard GPT-3.5 Turbo model while using a 4K context window and training data up to September 2021. Not specifically built for chat, it still supports diverse tasks like question answering, text completion, and code generation, aiming to enhance AI usability with safer and more accurate interactions.
FAQ
What does GPT-3.5 Turbo (Instruct) cost on OpenRouter?
On OpenRouter, GPT-3.5 Turbo (Instruct) costs $1.5 per 1M input tokens and $2 per 1M output tokens.
What is the context window for GPT-3.5 Turbo (Instruct) on OpenRouter?
GPT-3.5 Turbo (Instruct) supports a 4,095 token context window on OpenRouter.
How does OpenRouter compare to other GPT-3.5 Turbo (Instruct) providers?
GPT-3.5 Turbo (Instruct) is available from 4 providers. The cheapest input pricing is $1.5/1M tokens from Azure OpenAI.
What API model ID do I use for GPT-3.5 Turbo (Instruct) on OpenRouter?
Use the model ID openai/gpt-3.5-turbo-instruct when calling OpenRouter's API.
Who created GPT-3.5 Turbo (Instruct)?
GPT-3.5 Turbo (Instruct) was created by OpenAI as part of the GPT-3.5 model family.
Is GPT-3.5 Turbo (Instruct) open source?
GPT-3.5 Turbo (Instruct) is not open source; the seed data lists it as proprietary.