Catalog Changes · 2026-10-13 03:21:07.839469

Anthropic: Claude Sonnet 4.5 · 2026-10-13 03:21:07.839469 UTC

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Anthropic: Claude Sonnet 4.5

anthropic/claude-sonnet-4.5

OpenRouter Catalog Changes

Last Observed: 2026-10-13 12:00:59.841959 UTC

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...

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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 Claude	Claude

Benchmarks · 3

Benchmarks · Artificial Analysis · Agentic Index API Details /benchmarks/artificial_analysis/agentic_index 15.8	15.8
Benchmarks · Artificial Analysis · Coding Index API Details /benchmarks/artificial_analysis/coding_index 52.1	52.1
Benchmarks · Artificial Analysis · Intelligence Index API Details /benchmarks/artificial_analysis/intelligence_index 20.7	20.7

Catalog Identity And Metadata · 11

Canonical Slug API Details /canonical_slug anthropic/claude-4.5-sonnet-20250929	anthropic/claude-4.5-sonnet-20250929
Context Tokens API Details /context_length 1000000	1,000,000
Created API Details /created 1759161676	2025-09-29 16:01:16 UTC
Description API Details /description Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...	Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
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 anthropic/claude-sonnet-4.5	anthropic/claude-sonnet-4.5
Knowledge Cutoff API Details /knowledge_cutoff 2025-01-31	2025-01-31
Links · Details API Details /links/details /api/v1/models/anthropic/claude-4.5-sonnet-20250929/endpoints	/api/v1/models/anthropic/claude-4.5-sonnet-20250929/endpoints
Name API Details /name Anthropic: Claude Sonnet 4.5	Anthropic: Claude Sonnet 4.5
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 1	1
Default Parameters · Top K API Details /default_parameters/top_k Explicit Null	Explicit Null
Default Parameters · Top P API Details /default_parameters/top_p 1	1

Request Limits · 1

Per Request Limits API Details /per_request_limits Explicit Null	Explicit Null

Pricing · 6

Output Price · USD/Token API Details /pricing/completion 0.000015	0.000015
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.0000003	0.0000003
Pricing · Input Cache Write API Details /pricing/input_cache_write 0.00000375	0.00000375
Pricing · Input Cache Write 1h API Details /pricing/input_cache_write_1h 0.000006	0.000006
Input Price · USD/Token API Details /pricing/prompt 0.000003	0.000003
Pricing · Web Search API Details /pricing/web_search 0.01	0.01

Reasoning · 1

Reasoning · Mandatory API Details /reasoning/mandatory False	False

Provider Limits · 3

Top Provider · Context Length API Details /top_provider/context_length 1000000	1,000,000
Top Provider · Is Moderated API Details /top_provider/is_moderated True	True
Top Provider · Max Completion Tokens API Details /top_provider/max_completion_tokens 64000	64,000

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
Pricing · Overrides API Details /pricing/overrides Array · See Items	Array · See Items
Reasoning API Details /reasoning Object · See Fields	Object · See Fields
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

text
image
file

API Details

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

Architecture · Output Modalities

1 items · source order preserved

text

API Details

Item	/architecture/output_modalities/*
1	text

Supported Parameters

12 items · source order preserved

include_reasoning
max_completion_tokens
max_tokens
reasoning
response_format
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p

API Details

Item	/supported_parameters/*
1	include_reasoning
2	max_completion_tokens
3	max_tokens
4	reasoning
5	response_format
6	stop
7	structured_outputs
8	temperature
9	tool_choice
10	tools
11	top_k
12	top_p

Benchmarks · Design Arena

11 items · source order preserved

Item	Arena	Category	Elo	Rank	Win Rate
1	models	3d	1161	63	51
2	models	asciiart	1206	22	56.1
3	models	codecategories	1187	60	51.5
4	models	dataviz	1170	69	47.4
5	models	gamedev	1171	63	51.1
6	models	svg	1114	56	52.2
7	models	uicomponent	1176	64	49.5
8	models	website	1193	64	51.8
9	agents	fullstack	1049	36	43.7
10	agents	mobileapps	1134	31	52.9
11	agents	webapps	1053	37	43.2

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	1161	63	51
2	models	asciiart	1206	22	56.1
3	models	codecategories	1187	60	51.5
4	models	dataviz	1170	69	47.4
5	models	gamedev	1171	63	51.1
6	models	svg	1114	56	52.2
7	models	uicomponent	1176	64	49.5
8	models	website	1193	64	51.8
9	agents	fullstack	1049	36	43.7
10	agents	mobileapps	1134	31	52.9
11	agents	webapps	1053	37	43.2

Pricing · Overrides

1 items · source order preserved

Item 1

Completion: 0.0000225
Input Cache Read: 0.0000006
Input Cache Write: 0.0000075
Input Cache Write 1h: 0.000012
Min Prompt Tokens: 200000
Prompt: 0.000006

API Details

Item	/pricing/overrides/*/completion	/pricing/overrides/*/input_cache_read	/pricing/overrides/*/input_cache_write	/pricing/overrides/*/input_cache_write_1h	/pricing/overrides/*/min_prompt_tokens	/pricing/overrides/*/prompt
1	0.0000225	0.0000006	0.0000075	0.000012	200000	0.000006