Skip to content
ModelCap

GPT-3.5 Turbo

Arena #348No linked weights

OpenAI·#431 of 504 in the all-versions archive

GPT-3.5 Turbo is a language model from OpenAI. It ranks #431 of 504 in ModelCap's all-versions archive, with an Index score of 15.3, measured on 2 public benchmarks. Its score range of 10.3–20.3 spans positions #416–#473. It reads up to 16K tokens of context, with no downloadable weights linked in the current source data.

Figures as of 6 Nov 2026, 20:49 UTC · download the public dataset · methodology

ModelCap Index · All-versions archive
15.3#431
Measured on 2 public benchmarks · range 10.3–20.3
Evidence as of 28 Oct 2026, 00:00 UTC
Market Gravity
7.5
Secondary market signal

Superseded by GPT-4 Turbo. It no longer holds a current-board position; its all-versions archive rank is #431.

Input
Unlisted
no listed API price
Output
Unlisted
no listed API price
Context
16K
tokens
Providers
0
endpoints

Providers

Uptime measured over the last 30 minutes

No provider is currently serving this model.

Reasoning efforts

Best supported result can inform ModelCap

Published Max, X-High, High and other configurations for this model. These are sourced scores, not head-to-head essays.

Related community configurations

Human preference rating
ConfigurationRatingSource rankVotesSource
Release 0125
GPT-3.5 Turbo (0125)
1226
CI 1221–1230
#33866KLMArena
Match 99%

Other versions (4)

ModelCap Index · All-versions archive

Methodology
15.3
Measured on 2 public benchmarks
All-versions archive
#431 of 504
Score range
10.3–20.3
Rank range
#416–#473
Evidence as of
28 Oct 2026, 00:00 UTC
Benchmarks used
Arena Coding, Arena Overall
Technical details
Public rank basis
Measured (measured)
Evidence label
Measured · 2 public benchmark observations across 2 boards
Index support
62.5% · strong
Identity binding
Exact catalogue product · openai/openai/gpt-3.5-turbo · aggregates disclosed benchmark configurations · endpoint configuration not claimed
Index observations used
2
Qualified Index evidence point
15.3
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
15.3
Evidence status
confirmed · 77% mass
General preference
15.1
Coding
16.7
Agents & tools
—
Reasoning
—
Evidence breadth
92%
Evidence coverage
63%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
—
Liquidity (providers × uptime)
—
Open reach (HF downloads)
—
Surface (context / tools / modalities)
30.1
Freshness
0.8
  • · Catalogue: context 16385, tools
  • · First seen 2023-05-28

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

BES evidence selected · measured input only

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Deployment readiness

Metadata index
27.2
limited · 37% metadata coverage
Not capability
Artifact reproducibility
0.0
Access & legal clarity
30.3
Deployability
35.0
Evaluation provenance
53.1

Not yet published: a pinned repository revision, the architecture and model type, a parameter count, safetensors weight metadata, the base model it derives from, a declared licence, a link to the licence terms, a current serving provider, measured provider uptime, published provider pricing, pinned evaluation dataset versions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
7.5
OpenRouter weekly popularity
Not listed

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

Status
Ranked
Source
LMArena
Official rank
#348 of 419
Rating
1204.3
95% confidence interval
1196–1213
Votes
17K
Source published at
28 Oct 2026, 00:00 UTC
Category
overall
Identity match confidence
99%

Market Gravity breakdown

Usage55%
0.0

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
0.0

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
50.0

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
0.8

Time since first public availability, on a six-month half-life.

Specification

Model ID
openai/gpt-3.5-turbo
Context window
16K tokens
Declared output cap
4K tokens

OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. OpenRouter metadata

Inputs
Text
Outputs
Text
Tokenizer
GPT
Cached input tokens
Not offered
First seen on OpenRouter
28 May 2023
Knowledge cutoff
2021-09-30

Capabilities

  • Not supported: Reasoning
  • Supported: Tool use
  • Supported: Structured output
  • Supported: Response format
  • Supported: Moderated

Benchmark leaderboards featuring GPT-3.5 Turbo

All leaderboards
Public benchmark boards on which GPT-3.5 Turbo has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena text leaderboardArena (LMArena)12261221–1230#338 of 419Release 012528 Oct 2026
Arena coding leaderboardArena (LMArena)12751267–1283#328 of 414Release 012528 Oct 2026

GPT-3.5 Turbo: common questions

How does GPT-3.5 Turbo rank among AI models?

GPT-3.5 Turbo is a superseded version and is not on the current board as of 6 November 2026. Its archive position, where one exists, is shown on the page; the newer version carries the current rank.

How much does GPT-3.5 Turbo cost per 1M tokens?

No live API price is listed for GPT-3.5 Turbo in the current snapshot as of 6 November 2026 because no serving endpoint is published. ModelCap shows a price only when a provider currently lists one.

What is the context window of GPT-3.5 Turbo?

GPT-3.5 Turbo has a published context window of 16K tokens (16,385). The snapshot lists a 4,096 token catalogue-declared route output cap. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. The providers table lists each endpoint's context limit.

Is GPT-3.5 Turbo open-weight?

No linked weights. No downloadable model weights are linked in the current source data. This does not identify every API or chat product that offers the model.

Which benchmarks has GPT-3.5 Turbo been evaluated on?

GPT-3.5 Turbo has published results on 2 public boards tracked by ModelCap as of 6 November 2026: Arena text 1226 (#338 of 419) and Arena coding 1275 (#328 of 414). Each board page ranks every tracked model on that benchmark. The ModelCap Index scores the results its methodology admits, with published uncertainty, and shows reference boards without scoring them.

When was GPT-3.5 Turbo released?

GPT-3.5 Turbo first appeared in the catalogue on 28 May 2023, with a published knowledge cutoff of 2021-09-30. It has since been superseded by GPT-4 Turbo. Rank and price movements since then are recorded on the site's changes feed.