Skip to content
AI Atlas
ModelDeprecatedClosed / proprietaryIdentity probable

gpt-3.5-turbo

OpenAIfamily · GPT 3.5developers.openai.com/api/docs/models/gpt-3.5-tu

Legacy GPT model for cheaper chat and non-chat tasks

Open in Graph
data quality72

Updated 4 h ago · first seen 11 Sept 2026

model_01M293V78K66F7NP209Q472P46

Overview

Identity

Canonical model
Yesidentity confidence: mediumOne row per real model release. Artifacts (checkpoints, quantisations, conversions) and folded evaluation variants point here.
Official checkpoints
None recorded — closed weightsofficial_checkpoints = hf_repo identifiers carried by the model itself; artifacts are separate entities pointing here through canonical_id.
Artifacts
None recordedSeparate entities (checkpoint · quantization · conversion · packaging) pointing to this model through canonical_id.
Provider deployments
2
API aliases
gpt-3-5-turbo-0613gpt-3.5-turbogpt-35-turboopenai/gpt-3.5-turboopenai/gpt-3.5-turbo-0613Identifiers under which providers and evaluators refer to this model.
Folded evaluation variants
1Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.

Openness

Closed / proprietary— weights not available; 7 dimensions unknown.

Weights are not available; the model is reachable only through an API or a product.

  • Weights

    No

  • Inference code

    —

  • Training code

    —

  • Training data

    —

  • Dataset

    —

  • Commercial use

    —

  • Redistribution

    —

  • Derivatives

    —

dimensions marked null are unknown, not false

Key facts

Release date

Source:OpenRouter public model & pricing listingT2observed 15 h agomedium

Status

Source:OpenAI Platform docsT1observed 15 h agohigh

Knowledge cutoff

Source:OpenRouter public model & pricing listingT2observed 15 h agomedium

Deprecation date

Source:OpenAI Platform docsT1observed 15 h agohigh

Retirement date

Source:OpenAI Platform docsT1observed 15 h agohigh

Official page
developers.openai.com/api/docs/models/gpt-3.5-turbo

Source:OpenAI Platform docsT1observed 15 h agohigh

API model id

Source:OpenAI Platform docsT1observed 15 h agohigh

Openrouter id

Source:OpenRouter public model & pricing listingT2observed 4 h agomedium

Architecture

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 15 h agomedium

Capabilities

Modalities

Modalities
text
Input
text
Output
text

Capabilities

  • Tool calling

    Yes

    OpenRouter public model & pricing listing · T2

  • Structured output

    Yes

    OpenRouter public model & pricing listing · T2

  • Reasoning

    No

    Artificial Analysis · T2

  • Vision

    Unavailable

  • Audio

    Unavailable

  • Fine-tuning available

    Unavailable

Context window

Source:OpenRouter public model & pricing listingT2observed 4 h agomedium

Max output

Source:OpenRouter public model & pricing listingT2observed 4 h agomedium

Knowledge cutoff

Source:OpenRouter public model & pricing listingT2observed 15 h agomedium

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 15 h agomedium

Benchmarks4

Compare with another model →

Comparable same task and conditions · Partially comparable same task, conditions differ (effort, temperature, judge) · Not comparable different variant or metric

Benchmark results grouped by comparability group
Benchmark · groupBest scoreTrustConfigurationResultsvs leaderEvaluatedSource
Artificial Analysis Intelligence Indexcomposite · indexIndependentreasoningoffversion4.3conditions differ across rows → partially comparable2−47.9vs Claude Fable 5.1obs. 12 Sept 2026artificialanalysis.aiT2
GPQA Diamondreasoning · accuracy · variant=Diamond · evaluator=Artificial AnalysisIndependentevaluatorArtificial AnalysisvariantDiamondreasoningoffconditions differ across rows → partially comparable1non-primary groupobs. 12 Sept 2026artificialanalysis.aiT2
GPQA Diamondreasoning · accuracy · variant=GPQA Diamond · evaluator=Artificial AnalysisIndependentevaluatorArtificial AnalysisvariantGPQA Diamond1−66.6 ptvs gpt-6-astraobs. 11 Sept 2026artificialanalysis.aiT2

Current rows only, grouped by benchmark → canonical metric → comparability group (task configuration). Effort variants folded into this model appear as rows of the same group. 4 current rows in total. “vs leader” compares with the current leader of the benchmark's primary group only; other groups are not directly comparable. Comparability rules →

Providers & Pricing9

All offers in the price terminal →
Provider deployments, cheapest output first
ProviderContextInput / 1MOutput / 1MBatch in / outStatusObservedSource
OpenAI APIcheapest outputopenai/gpt-3.5-turbo:batch16.4Kout 4.1K—active6 h agosince 11 Sept 2026openrouter.aiT2
OpenRouteropenai/gpt-3.5-turbo:batch16.4Kout 4.1K—active4 h agosince 12 Sept 2026openrouter.aiT2
OpenAI APIgpt-3.5-turbo——active7 h agosince 11 Sept 2026developers.openai.comT1
OpenAI APIopenai/gpt-3.5-turbo16.4Kout 4.1K—active6 h agosince 11 Sept 2026openrouter.aiT2
OpenAI APIgpt-3.5-turbo-0125—$0.25 / $0.75active7 h agosince 11 Sept 2026developers.openai.comT1
OpenRouteropenai/gpt-3.5-turbo16.4Kout 4.1K—active4 h agosince 12 Sept 2026openrouter.aiT2
OpenAI APIopenai/gpt-3.5-turbo-06134.1Kout 3.69K—active6 h agosince 11 Sept 2026openrouter.aiT2
OpenAI APIgpt-3.5-turbo-1106—$1 / $2active7 h agosince 11 Sept 2026developers.openai.comT1
OpenRouteropenai/gpt-3.5-turbo-06134.1Kout 3.69K—active4 h agosince 12 Sept 2026openrouter.aiT2

USD per 1M tokens as published by each provider; native units (per-request fees, flex/priority tiers) are kept verbatim. Rows are append-only — every price change is kept in the history below. Cost of a workload →

Price history

Step lines per provider; amber markers are recorded changes. Click a marker or a row for the evidence behind that price.

Output price · USD / 1M tokens 2 providers

Output price history of gpt-3.5-turbo$0$0.50$1$1.5$2$2.5Sept 26Sept 26Sept 26Sept 26OpenAI API: first observed → $1.5 · 11 Sept 2026OpenAI API: $1.5 → $2 · 11 Sept 2026OpenAI API: $2 → $1.5 · 11 Sept 2026OpenAI API: $1.5 → $0.75 · 11 Sept 2026OpenRouter: first observed → $2 · 12 Sept 2026OpenRouter: $2 → $1.5 · 12 Sept 2026OpenRouter: $1.5 → $0.75 · 12 Sept 2026
  • OpenAI API
  • OpenRouter
  • OpenRouter$1.5 → $0.7512 Sept 2026
  • OpenRouter$2 → $1.512 Sept 2026
  • OpenRouterfirst observed $212 Sept 2026
  • OpenAI API$1.5 → $0.7511 Sept 2026
  • OpenAI API$2 → $1.511 Sept 2026
  • OpenAI API$1.5 → $211 Sept 2026
  • OpenAI APIfirst observed $1.511 Sept 2026

Input price · USD / 1M tokens 2 providers

Input price history of gpt-3.5-turbo$0$0.20$0.40$0.60$0.80$1$1.2Sept 26Sept 26Sept 26Sept 26OpenAI API: first observed → $0.50 · 11 Sept 2026OpenAI API: $0.50 → $1 · 11 Sept 2026OpenAI API: $1 → $0.50 · 11 Sept 2026OpenAI API: $0.50 → $0.25 · 11 Sept 2026OpenRouter: first observed → $1 · 12 Sept 2026OpenRouter: $1 → $0.50 · 12 Sept 2026OpenRouter: $0.50 → $0.25 · 12 Sept 2026
  • OpenAI API
  • OpenRouter
  • OpenRouter$0.50 → $0.2512 Sept 2026
  • OpenRouter$1 → $0.5012 Sept 2026
  • OpenRouterfirst observed $112 Sept 2026
  • OpenAI API$0.50 → $0.2511 Sept 2026
  • OpenAI API$1 → $0.5011 Sept 2026
  • OpenAI API$0.50 → $111 Sept 2026
  • OpenAI APIfirst observed $0.5011 Sept 2026

Versions & Artifacts0

Version history

Context window5 changes

11 Sept 2026→11 Sept 2026→11 Sept 2026→12 Sept 2026→12 Sept 2026→12 Sept 2026current

Max output2 changes

11 Sept 2026→11 Sept 2026→12 Sept 2026current

Knowledge cutofffirst observation only

11 Sept 2026current

Opennessfirst observation only

11 Sept 2026current

Statusfirst observation only

11 Sept 2026current

Each hop is a claim: click a value for its source, tier and observation time. Nothing is overwritten — a new observation closes the previous claim.

Artifacts 0

No artifact (checkpoint, quantisation, conversion or packaging) points to this model yet.

Timeline12

Full timeline →
  • Property changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: openrouter listed at changed from 2024-01-25 to 2023-05-28

    Openrouter listed at25 Jan 2024→28 May 2023openrouter
    openrouter.ai
  • Property changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: supported parameters changed from ["frequency_penalty", "logit_bias", "logprobs", "max_comp… to ["frequency_penalty", "logit_bias", "logprobs", "max_toke…

    Supported parametersfrequency_penalty, logit_bias, logprobs, max_completion_tokens, presence_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p→frequency_penalty, logit_bias, logprobs, max_tokens, presence_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_popenrouter
    openrouter.ai
  • Max output changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: max output tokens changed from 3685 to 4096

    Max output3.69K tokens→4.1K tokensopenrouter
    openrouter.ai
  • Context window changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: context length changed from 4095 to 16385

    Context window4.1K tokens→16.4K tokensopenrouter
    openrouter.ai
  • Property changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: openrouter id changed from openai/gpt-3.5-turbo-0613 to openai/gpt-3.5-turbo

    Openrouter idopenai/gpt-3.5-turbo-0613→openai/gpt-3.5-turboopenrouter
    openrouter.ai
  • Listed by providerModelgpt-3.5-turboOpenAI

    OpenRouter lists gpt-3.5-turbo at $0.25 in / $0.75 out per 1M tokens

    openrouter
    openrouter.ai
  • Listed by providerModelgpt-3.5-turboOpenAI

    OpenRouter lists gpt-3.5-turbo at $0.5 in / $1.5 out per 1M tokens

    openrouter
    openrouter.ai
  • Listed by providerModelgpt-3.5-turboOpenAI

    OpenRouter lists gpt-3.5-turbo at $1 in / $2 out per 1M tokens

    openrouter
    openrouter.ai
  • Benchmark resultModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo scores 29.7% on GPQA Diamond

    artificial_analysis
    artificialanalysis.ai
  • Benchmark resultModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo scores 5.49 on Artificial Analysis Intelligence Index

    artificial_analysis
    artificialanalysis.ai
  • Context window changedModelgpt-3.5-turboOpenAI

    GPT-3.5 Turbo: context length changed from 4096 to 16385

    Context window4.1K tokens→16.4K tokensopenrouter
    openrouter.ai
  • Context window changedModelgpt-3.5-turboOpenAI

    gpt-3.5-turbo: context length changed from 4096 to 4095

    Context window4.1K tokens→4.1K tokensopenrouter
    openrouter.ai

Change history23

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.

Viewing AI Atlas as of 1 Jan 2025 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

gpt-3.5-turbo was not yet in AI Atlas on 1 Jan 2025

First seen 11 Sept 2026. Nothing is inferred backwards: no attribute is shown for dates before the first observation.
23 claims · 22 properties

Release daterelease_date1

Claim history for Release date
ValueValid from → toStatusSourceConfidenceExtractor
25 Jan 2024 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Statusstatus1

Claim history for Status
ValueValid from → toStatusSourceConfidenceExtractor
deprecated → currentcurrentOpenAI Platform docsT1highdeterministic

Opennessopenness1

Claim history for Openness
ValueValid from → toStatusSourceConfidenceExtractor
proprietary → currentcurrentOpenAI Platform docsT1highdeterministic

Context windowcontext_length2

Claim history for Context window
ValueValid from → toStatusSourceConfidenceExtractor
4.1K tokens → currentcurrentArtificial AnalysisT2mediumdeterministic
4.1K tokens → supersededOpenRouter public model & pricing listingT2mediumdeterministic

Max outputmax_output_tokens1

Claim history for Max output
ValueValid from → toStatusSourceConfidenceExtractor
3.69K tokens → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
ValueValid from → toStatusSourceConfidenceExtractor
Sept 2021 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Modalitiesmodalities1

Claim history for Modalities
ValueValid from → toStatusSourceConfidenceExtractor
text → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
ValueValid from → toStatusSourceConfidenceExtractor
text → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
ValueValid from → toStatusSourceConfidenceExtractor
text → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Tokenizertokenizer1

Claim history for Tokenizer
ValueValid from → toStatusSourceConfidenceExtractor
GPT → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

API model idapi_model_id1

Claim history for API model id
ValueValid from → toStatusSourceConfidenceExtractor
gpt-3.5-turbo → currentcurrentOpenAI Platform docsT1highdeterministic

Deprecation datedeprecation_date1

Claim history for Deprecation date
ValueValid from → toStatusSourceConfidenceExtractor
22 Apr 2026 → currentcurrentOpenAI Platform docsT1highdeterministic

Retirement dateretirement_date1

Claim history for Retirement date
ValueValid from → toStatusSourceConfidenceExtractor
23 Oct 2026 → currentcurrentOpenAI Platform docsT1highdeterministic

Retirement tentativeretirement_tentative1

Claim history for Retirement tentative
ValueValid from → toStatusSourceConfidenceExtractor
No → currentcurrentOpenAI Platform docsT1highdeterministic

Official pageofficial_url1

Claim history for Official page
ValueValid from → toStatusSourceConfidenceExtractor
https://developers.openai.com/api/docs/models/gpt-3.5-turbo → currentcurrentOpenAI Platform docsT1highdeterministic

Descriptiondescription1

Claim history for Description
ValueValid from → toStatusSourceConfidenceExtractor
Legacy GPT model for cheaper chat and non-chat tasks → currentcurrentOpenAI Platform docsT1highdeterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
ValueValid from → toStatusSourceConfidenceExtractor
openai/gpt-3.5-turbo-0613 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Reasoningreasoning1

Claim history for Reasoning
ValueValid from → toStatusSourceConfidenceExtractor
No → currentcurrentArtificial AnalysisT2mediumdeterministic

Retired snapshotsretired_snapshots1

Claim history for Retired snapshots
ValueValid from → toStatusSourceConfidenceExtractor
gpt-3.5-turbo-0125, gpt-3.5-turbo-0301, gpt-3.5-turbo-0613, gpt-3.5-turbo-1106 → currentcurrentOpenAI Platform docsT1highdeterministic

Structured outputstructured_output1

Claim history for Structured output
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
ValueValid from → toStatusSourceConfidenceExtractor
frequency_penalty, logit_bias, logprobs, max_completion_tokens, presence_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Tool callingtool_calling1

Claim history for Tool calling
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

28

Source tiers

T1T29 / 19

Freshest observation

4 h ago

Conflicts

None

Source documents 5

Source documents
SourceDocumentTypeTierLast observedSnapshots
OpenAI Platform docsdevelopers.openai.com/api/docs/deprecations.md model_docsT1· Official4 h ago2
OpenAI Platform docsdevelopers.openai.com/api/docs/models.md model_docsT1· Official4 h ago1
OpenAI Platform docsdevelopers.openai.com/api/docs/pricing.md pricingT1· Official4 h ago2
OpenRouter public model & pricing listingopenrouter.ai/api/v1/models catalogueT2· Quality secondary4 h ago9
Artificial Analysisartificialanalysis.ai/leaderboards/models leaderboardT2· Quality secondary5 h ago2

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (72/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →