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GPT 3.5 Turbo Instruct API price
openai/gpt-3.5-turbo-instruct
The cheapest GPT 3.5 Turbo Instruct API is $1.50/M input at Official - OpenAI - all 2 providers compared below, per 1M tokens.
MidOpenAI4K context2 sellers
Input
$1.50
per 1M tokens · Official - OpenAI
Output
$2.00
per 1M tokens · Official - OpenAI
Where to buy it
Cheapest GPT 3.5 Turbo Instruct API providers compared - 2 sellers, from $1.50/M.
| Provider | Input $/M | Output $/M |
|---|---|---|
| Official - OpenAI | 1.50cheapest | 2.00 |
| OpenRouter (aggregator) | 1.50 | 2.00 |
Against its tier
- This model$3.50
- Cheapest · Nemotron 3 Super 120B A12B$0.485
- Tier median · Grok 4.3$3.75
- Dearest · GPT 5.5 Cyber$87.50
#16 of 33 mid · cheaper than 53%
Details
- Context window
- 4K4,095 tokens
- Developer
- OpenAI
- Sellers
- 2
- Cheapest at
- Official - OpenAI
- Combined
- $3.50in + out per 1M
- Last checked
- 2026-08-28