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.
Training data up to Sep 2021.
Modalities
In / Out Price
$0.50 / $1.50per 1M
Context
16K
Released
May 28, 2023
Knowledge Cutoff
Sep 2021
This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.
The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.
Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).
Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.
Scores on standardized evaluations. Higher percentages are better — and rank percentile shows where this model lands among all models on OpenRouter.
| Source | Benchmark | Score |
|---|---|---|
| Artificial Analysis | GPT-3.5 Turbo Coding Index | 10.7 |
| Artificial Analysis | GPT-3.5 Turbo GPQA Diamond | 29.7% |
Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.
Token volume and request traffic to this model over time.
Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.
| $0.50 | $1.50 | 0.73s | 46 tps |
Throughput
46tok/s
P50, best across providers
Latency
0.73s
P50, best provider
100.00%
99.98%
When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.
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. Training data up to Sep 2021.
GPT-3.5 Turbo costs $0.50/M input tokens and $1.50/M output tokens.
GPT-3.5 Turbo has a 16,385 token context window. It supports up to 4,096 completion tokens.
Yes. GPT-3.5 Turbo accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
GPT-6 Astra, GPT-6 Astra Pro, GPT-5.6 Luna Pro and 55 more are other text models from OpenAI.
GPT-3.5 Turbo was released on May 28, 2023. Its knowledge cutoff is September 30, 2021.
