Last refreshed 2026-06-15. 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 5 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 |
| Vercel AI Gateway | $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.