Catalog Changes · 2026-10-13 03:21:06.820417

OpenAI: GPT-5.1 · 2026-10-13 03:21:06.820417 UTC

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OpenRouter

First recorded baseline; no earlier history is available.

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OpenAI: GPT-5.1

openai/gpt-5.1

OpenRouter Catalog Changes

Last Observed: 2026-10-13 12:00:59.625964 UTC

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...

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Architecture And Modalities · 3

Architecture · Instruct Type API Details /architecture/instruct_type Explicit Null	Explicit Null
Architecture · Modality API Details /architecture/modality text+image+file->text	text+image+file->text
Architecture · Tokenizer API Details /architecture/tokenizer GPT	GPT

Benchmarks · 3

Benchmarks · Artificial Analysis · Agentic Index API Details /benchmarks/artificial_analysis/agentic_index Explicit Null	Explicit Null
Benchmarks · Artificial Analysis · Coding Index API Details /benchmarks/artificial_analysis/coding_index 49.4	49.4
Benchmarks · Artificial Analysis · Intelligence Index API Details /benchmarks/artificial_analysis/intelligence_index 24.7	24.7

Catalog Identity And Metadata · 11

Canonical Slug API Details /canonical_slug openai/gpt-5.1-20251113	openai/gpt-5.1-20251113
Context Tokens API Details /context_length 400000	400,000
Created API Details /created 1763060305	2025-11-13 18:58:25 UTC
Description API Details /description GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...	GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
Expiration Date API Details /expiration_date Explicit Null	Explicit Null
Hugging Face Id API Details /hugging_face_id Empty String	Empty String
Id API Details /id openai/gpt-5.1	openai/gpt-5.1
Knowledge Cutoff API Details /knowledge_cutoff Explicit Null	Explicit Null
Links · Details API Details /links/details /api/v1/models/openai/gpt-5.1-20251113/endpoints	/api/v1/models/openai/gpt-5.1-20251113/endpoints
Name API Details /name OpenAI: GPT-5.1	OpenAI: GPT-5.1
Supported Voices API Details /supported_voices Explicit Null	Explicit Null

Default Parameters · 6

Default Parameters · Frequency Penalty API Details /default_parameters/frequency_penalty Explicit Null	Explicit Null
Default Parameters · Presence Penalty API Details /default_parameters/presence_penalty Explicit Null	Explicit Null
Default Parameters · Repetition Penalty API Details /default_parameters/repetition_penalty Explicit Null	Explicit Null
Default Parameters · Temperature API Details /default_parameters/temperature Explicit Null	Explicit Null
Default Parameters · Top K API Details /default_parameters/top_k Explicit Null	Explicit Null
Default Parameters · Top P API Details /default_parameters/top_p Explicit Null	Explicit Null

Request Limits · 1

Per Request Limits API Details /per_request_limits Explicit Null	Explicit Null

Pricing · 4

Output Price · USD/Token API Details /pricing/completion 0.00001	0.00001
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.000000125	0.000000125
Input Price · USD/Token API Details /pricing/prompt 0.00000125	0.00000125
Pricing · Web Search API Details /pricing/web_search 0.01	0.01

Reasoning · 3

Reasoning · Default Effort API Details /reasoning/default_effort none	none
Reasoning · Default Enabled API Details /reasoning/default_enabled True	True
Reasoning · Mandatory API Details /reasoning/mandatory False	False

Provider Limits · 3

Top Provider · Context Length API Details /top_provider/context_length 400000	400,000
Top Provider · Is Moderated API Details /top_provider/is_moderated True	True
Top Provider · Max Completion Tokens API Details /top_provider/max_completion_tokens 128000	128,000

API Structure And Container Types

Architecture API Details /architecture Object · See Fields	Object · See Fields
Architecture · Input Modalities API Details /architecture/input_modalities Array · See Items	Array · See Items
Architecture · Output Modalities API Details /architecture/output_modalities Array · See Items	Array · See Items
Benchmarks API Details /benchmarks Object · See Fields	Object · See Fields
Benchmarks · Artificial Analysis API Details /benchmarks/artificial_analysis Object · See Fields	Object · See Fields
Benchmarks · Design Arena API Details /benchmarks/design_arena Array · See Items	Array · See Items
Default Parameters API Details /default_parameters Object · See Fields	Object · See Fields
Links API Details /links Object · See Fields	Object · See Fields
Pricing API Details /pricing Object · See Fields	Object · See Fields
Reasoning API Details /reasoning Object · See Fields	Object · See Fields
Reasoning · Supported Efforts API Details /reasoning/supported_efforts Array · See Items	Array · See Items
Supported Parameters API Details /supported_parameters Array · See Items	Array · See Items
Top Provider API Details /top_provider Object · See Fields	Object · See Fields

Architecture · Input Modalities

3 items · source order preserved

image
text
file

API Details

Item	/architecture/input_modalities/*
1	image
2	text
3	file

Architecture · Output Modalities

1 items · source order preserved

text

API Details

Item	/architecture/output_modalities/*
1	text

Supported Parameters

11 items · source order preserved

include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
seed
structured_outputs
tool_choice
tools
verbosity

API Details

Item	/supported_parameters/*
1	include_reasoning
2	max_completion_tokens
3	max_tokens
4	reasoning
5	reasoning_effort
6	response_format
7	seed
8	structured_outputs
9	tool_choice
10	tools
11	verbosity

Benchmarks · Design Arena

8 items · source order preserved

Item	Arena	Category	Elo	Rank	Win Rate
1	models	3d	1064	98	43.7
2	models	asciiart	1121	55	48.6
3	models	codecategories	1175	69	53
4	models	dataviz	1208	53	58
5	models	gamedev	1184	57	55.9
6	models	svg	1148	46	57.4
7	models	uicomponent	1170	67	52.9
8	models	website	1191	66	54

API Details

Item	/benchmarks/design_arena/*/arena	/benchmarks/design_arena/*/category	/benchmarks/design_arena/*/elo	/benchmarks/design_arena/*/rank	/benchmarks/design_arena/*/win_rate
1	models	3d	1064	98	43.7
2	models	asciiart	1121	55	48.6
3	models	codecategories	1175	69	53
4	models	dataviz	1208	53	58
5	models	gamedev	1184	57	55.9
6	models	svg	1148	46	57.4
7	models	uicomponent	1170	67	52.9
8	models	website	1191	66	54

Reasoning · Supported Efforts

4 items · source order preserved

high
medium
low
none

API Details

Item	/reasoning/supported_efforts/*
1	high
2	medium
3	low
4	none