Catalog Changes · 2026-10-15 06:04:04.294888

Anthropic: Claude Fable 5 · 2026-10-15 06:04:04.294888 UTC

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2 Changed Fields

Field / Array Position	Previous Value	Observed Value
Benchmarks · Design Arena[10] · Elo	1317	1319
Benchmarks · Design Arena[16] · Rank	13	12

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Anthropic: Claude Fable 5

anthropic/claude-fable-5

OpenRouter Catalog Changes

Last Observed: 2026-10-15 06:04:04.294888 UTC

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...

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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 50.7	50.7
Benchmarks · Artificial Analysis · Coding Index API Details /benchmarks/artificial_analysis/coding_index 76.5	76.5
Benchmarks · Artificial Analysis · Intelligence Index API Details /benchmarks/artificial_analysis/intelligence_index 49.6	49.6

Catalog Identity And Metadata · 11

Canonical Slug API Details /canonical_slug anthropic/claude-5-fable-20260609	anthropic/claude-5-fable-20260609
Context Tokens API Details /context_length 1000000	1,000,000
Created API Details /created 1781007515	2026-06-09 12:18:35 UTC
Description API Details /description Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...	Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...
Expiration Date API Details /expiration_date Explicit Null	Explicit Null
Hugging Face Id API Details /hugging_face_id Explicit Null	Explicit Null
Id API Details /id anthropic/claude-fable-5	anthropic/claude-fable-5
Knowledge Cutoff API Details /knowledge_cutoff Explicit Null	Explicit Null
Links · Details API Details /links/details /api/v1/models/anthropic/claude-5-fable-20260609/endpoints	/api/v1/models/anthropic/claude-5-fable-20260609/endpoints
Name API Details /name Anthropic: Claude Fable 5	Anthropic: Claude Fable 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 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 · 6

Output Price · USD/Token API Details /pricing/completion 0.00005	0.00005
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.000001	0.000001
Pricing · Input Cache Write API Details /pricing/input_cache_write 0.0000125	0.0000125
Pricing · Input Cache Write 1h API Details /pricing/input_cache_write_1h 0.00002	0.00002
Input Price · USD/Token API Details /pricing/prompt 0.00001	0.00001
Pricing · Web Search API Details /pricing/web_search 0.01	0.01

Reasoning · 2

Reasoning · Default Effort API Details /reasoning/default_effort high	high
Reasoning · Mandatory API Details /reasoning/mandatory True	True

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 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

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

11 items · source order preserved

include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
stop
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	stop
8	structured_outputs
9	tool_choice
10	tools
11	verbosity

Benchmarks · Design Arena

18 items · source order preserved

Item	Arena	Category	Elo	Rank	Win Rate
1	agents	agenticgamedev	1285	1	61.9
2	agents	agentichtmlslides	1254	1	59.4
3	agents	agenticslides(html)	1252	1	59.5
4	agents	androidnative	1297	2	65.1
5	agents	fullstack	1280	6	58.2
6	agents	godotgamedev	1292	2	64.3
7	agents	htmlslides	1277	1	63.1
8	agents	mobileapps	1260	5	60.4
9	agents	python-pptxslides	1295	3	61.4
10	agents	webapps	1254	8	56.4
11	models	3d	1319	15	61.8
12	models	asciiart	1330	2	68
13	models	codecategories	1312	12	57.7
14	models	dataviz	1306	13	57.5
15	models	gamedev	1339	10	60.8
16	models	svg	1302	4	62.6
17	models	uicomponent	1320	12	58.1
18	models	website	1297	16	56

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	agents	agenticgamedev	1285	1	61.9
2	agents	agentichtmlslides	1254	1	59.4
3	agents	agenticslides(html)	1252	1	59.5
4	agents	androidnative	1297	2	65.1
5	agents	fullstack	1280	6	58.2
6	agents	godotgamedev	1292	2	64.3
7	agents	htmlslides	1277	1	63.1
8	agents	mobileapps	1260	5	60.4
9	agents	python-pptxslides	1295	3	61.4
10	agents	webapps	1254	8	56.4
11	models	3d	1319	15	61.8
12	models	asciiart	1330	2	68
13	models	codecategories	1312	12	57.7
14	models	dataviz	1306	13	57.5
15	models	gamedev	1339	10	60.8
16	models	svg	1302	4	62.6
17	models	uicomponent	1320	12	58.1
18	models	website	1297	16	56

Reasoning · Supported Efforts

5 items · source order preserved

max
xhigh
high
medium
low

API Details

Item	/reasoning/supported_efforts/*
1	max
2	xhigh
3	high
4	medium
5	low