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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.

Training data up to Sep 2021.

openai/gpt-3.5-turbo
Organization
OpenAI
Family
gpt
Providers
10
Context
16,385
Output limit
4,096
Knowledge
2021-09-01
Release
2023-03-01
Updated
2023-11-06
Weights
Closed
Input
text
Output
text
Capabilities
Temperature

Providers

Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.

10 offers · USD per million tokens
ProviderModel IDContextOutputInput / output · 1MReasoningToolsStructuredDetails
DevPass (LLM Gateway)
gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View
Eden AI
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoYesYes
View
Impossibl
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View
Kilo Gateway
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoYesYes
View
LLM Gateway
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoYesNo
View
Merge Gateway
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View
NanoGPT
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View
OpenAIvia OpenRouter
openai/gpt-3.5-turbo
unknown		16,3854,096$0.50 / $1.50NoYesYes
View
OrcaRouter
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View
Vercel AI Gateway
openai/gpt-3.5-turbo
16,3854,096$0.50 / $1.50NoNoNo
View

Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.

Pricing

Compare token rates and cache charges across available routes and hosting configurations.

USD per million tokens
Input from$0.50Per 1M input tokens
Output from$1.50Per 1M output tokens
Available offers10Across 10 providers

Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.

Endpoint price comparisonLatest observed snapshot · 1 lowest-priced configuration
InputOutput
OpenAIopenai
$0.50$1.50
openai/gpt-3.5-turboObserved
Input
$0.50
Output
$1.50
Hosting prices through OpenRouter All endpoints and cache rates
EndpointInput / 1MOutput / 1MCache read / 1MCache write / 1M
OpenAIopenai$0.50$1.50——

Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.

Performance

Review reported latency and output-throughput percentiles from the latest observed rolling window.

Latest 30-minute observation

Time to first token · milliseconds

Latency distributionRolling 30-minute snapshot · 1 endpoint
P50P75P90P99
OpenAIopenai
571–1,257.68 ms
All latency percentiles 1 endpoints
EndpointP50P75P90P99
OpenAIopenai571 ms638 ms715 ms1,257.68 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 1 endpoint
P50P75P90P99
OpenAIopenai
90–115.62 t/s
All throughput percentiles 1 endpoints
EndpointP50P75P90P99
OpenAIopenai90 t/s96 t/s100 t/s115.62 t/s

Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.

Uptime

Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.

Successful requests by window
Availability by endpointCurrent overlapping windows · 1 endpoint
Endpoint5 minutes30 minutes24 hours
OpenAIopenai

Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.

Benchmarks

Review attributed evaluation results on each source's original scale.

External evaluations
openai/gpt-3.5-turboObserved
Benchmark profileArtificial Analysis · shared source scale from 0 to 20
Coding10.7

Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.

Detailed evaluations

EvaluationConfigurationSourceResultsDetails
Composite indicesGPT-3.5 Turboopenai/gpt-3.5-turboArtificial AnalysisIntelligence — · Coding 10.7 · Agentic —
Details

Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 4, 2026.

Technical details & API

Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.

Current route specifications
openai/gpt-3.5-turboObserved
Context
16,385
Maximum output
4,096
Tokenizer
GPT
Input
text
Output
text
Moderation
Yes
Knowledge cutoff
2021-09-30
Added to OpenRouter
2023-05-28
Base URLhttps://openrouter.ai/api/v1
Model IDopenai/gpt-3.5-turbo
Version IDopenai/gpt-3.5-turbo

Supported parameters

  • frequency_penalty
  • logit_bias
  • logprobs
  • max_tokens
  • presence_penalty
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_logprobs
  • top_p

Frequently asked questions

Answers based on the model metadata and serving offers currently in the catalog.

How much does GPT-3.5-turbo cost?

Listed rates start at $0.50 per million input tokens and $1.50 per million output tokens. Prices vary by provider and configuration; see Pricing for details.

Which providers offer GPT-3.5-turbo?

There are 10 cataloged offers across 10 providers. Compare model IDs, prices and limits in Providers.

What is the context window?

The cataloged model context is 16,385 tokens. Each serving endpoint may apply a different limit.

Does it support tools and structured output?

Tool calling: No. Structured output: No. Support can vary by endpoint.

Catalog history · 2 recorded revisions

Metadata observations since this model was first cataloged. These are not model release versions.

  • · f2d607e1a8bf
  • · a21c5d90bec8