Specification

Release date: 28 May 2023
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Status: deprecated
Source:Artificial AnalysisT2observed 5 h agomedium
Openness: proprietary
Source:Artificial AnalysisT2observed 5 h agomedium
Context window: 16.4K tokens
Source:OpenRouter public model & pricing listingT2observed 3 h agomedium
Max output: 4.1K tokens
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Knowledge cutoff: Sept 2021
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Modalities: text
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Input modalities: text
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Output modalities: text
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Tokenizer: GPT
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Openrouter id: openai/gpt-3.5-turbo
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
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
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

16

Source tiers

T216

Freshest observation

3 h ago

Conflicts

None

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: 16.4K tokens
Source:OpenRouter public model & pricing listingT2observed 3 h agomedium
Max output: 4.1K tokens
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Knowledge cutoff: Sept 2021
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium
Tokenizer: GPT
Source:OpenRouter public model & pricing listingT2observed 6 h agomedium

Benchmark results
Benchmark	Score	Metric	Config	Evaluated	Source
Artificial Analysis Intelligence Index	5.49	index	aa_slug=gpt-35-turbo · version=4.3 · estimated=true	—	artificialanalysis.aiT2
GPQA	29.7%	accuracy	aa_slug=gpt-35-turbo · variant=GPQA Diamond · evaluator=Artificial Analysis · index_version=4.3	—	artificialanalysis.aiT2

Scores are reported as published, with their evaluation configuration (harness, prompting, judge). Results with different configs are not directly comparable — see methodology.

Current prices

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
OpenAI APIopenai/gpt-3.5-turbo:batch	$0.25	$0.75	—	—	16.4K	2 h ago	openrouter.aiT2
OpenAI APIopenai/gpt-3.5-turbo	$0.50	$1.5	—	—	16.4K	2 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Available through 1

OpenAI API

Price history

Input price · USD / 1M tokens

Output price · USD / 1M tokens

OpenAI API

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

18 claims · 16 properties

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
28 May 2023	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Statusstatus1

Claim history for Status
Value	Valid from → to	Status	Source	Confidence	Extractor
deprecated	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Opennessopenness1

Claim history for Openness
Value	Valid from → to	Status	Source	Confidence	Extractor
proprietary	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Context windowcontext_length3

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
16.4K tokens	12 Sept 2026 00:05 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic
4.1K tokens	11 Sept 2026 22:42 UTC → 12 Sept 2026 00:05 UTC	superseded	Artificial AnalysisT2	medium	deterministic
16.4K tokens	11 Sept 2026 21:10 UTC → 11 Sept 2026 22:42 UTC	superseded	OpenRouter public model & pricing listingT2	medium	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
4.1K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
Value	Valid from → to	Status	Source	Confidence	Extractor
Sept 2021	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tokenizertokenizer1

Claim history for Tokenizer
Value	Valid from → to	Status	Source	Confidence	Extractor
GPT	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
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.	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
openai/gpt-3.5-turbo	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
No	11 Sept 2026 22:42 UTC → current	current	Artificial AnalysisT2	medium	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
frequency_penalty, logit_bias, logprobs, max_tokens, presence_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_logprobs, top_p	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

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 →

12 Sept 2026
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
11 Sept 2026
Benchmark resultModelGPT-3.5 TurboOpenAI
GPT-3.5 Turbo scores 29.7% on GPQA
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Benchmark resultModelGPT-3.5 TurboOpenAI
GPT-3.5 Turbo scores 5.49 on Artificial Analysis Intelligence Index
artificial_analysis
artificialanalysis.ai
11 Sept 2026
Context window changedModelGPT-3.5 TurboOpenAI
GPT-3.5 Turbo: context length changed from 16385 to 4096
Context window16.4K tokens→4.1K tokensartificial_analysis
artificialanalysis.ai
28 May 2023
New modelModelGPT-3.5 TurboOpenAI
New model: GPT-3.5 Turbo (OpenAI)
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelGPT-3.5 TurboOpenAI
OpenAI API lists GPT-3.5 Turbo at $0.25 in / $0.75 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelGPT-3.5 TurboOpenAI
OpenAI API lists GPT-3.5 Turbo at $0.5 in / $1.5 out per 1M tokens
openrouter
openrouter.ai

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	2 h ago	4
Artificial Analysis	artificialanalysis.ai/leaderboards/models	leaderboard	T2· Quality secondary	5 h ago	1

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