SpaceXAI: Grok 4.20

x-ai/grok-4.20

Last Observed: 2026-10-15 06:03:58.142548 UTC

Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...

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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 Grok	Grok

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 Explicit Null	Explicit Null
Benchmarks · Artificial Analysis · Intelligence Index API Details /benchmarks/artificial_analysis/intelligence_index 25.7	25.7

Catalog Identity And Metadata · 11

Canonical Slug API Details /canonical_slug x-ai/grok-4.20-20260309	x-ai/grok-4.20-20260309
Context Tokens API Details /context_length 2000000	2,000,000
Created API Details /created 1774979019	2026-03-31 17:43:39 UTC
Description API Details /description Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...	Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
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 x-ai/grok-4.20	x-ai/grok-4.20
Knowledge Cutoff API Details /knowledge_cutoff 2025-09-01	2025-09-01
Links · Details API Details /links/details /api/v1/models/x-ai/grok-4.20-20260309/endpoints	/api/v1/models/x-ai/grok-4.20-20260309/endpoints
Name API Details /name SpaceXAI: Grok 4.20	SpaceXAI: Grok 4.20
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 0.0000025	0.0000025
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.0000002	0.0000002
Input Price · USD/Token API Details /pricing/prompt 0.00000125	0.00000125
Pricing · Web Search API Details /pricing/web_search 0.005	0.005

Reasoning · 2

Reasoning · Default Enabled API Details /reasoning/default_enabled False	False
Reasoning · Mandatory API Details /reasoning/mandatory False	False

Provider Limits · 3

Top Provider · Context Length API Details /top_provider/context_length 2000000	2,000,000
Top Provider · Is Moderated API Details /top_provider/is_moderated False	False
Top Provider · Max Completion Tokens API Details /top_provider/max_completion_tokens 1800000	1,800,000

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
logprobs
max_tokens
reasoning
response_format
seed
structured_outputs
temperature
tool_choice
tools
top_logprobs
top_p

API Details

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

Benchmarks · Design Arena

14 items · source order preserved

Item	Arena	Category	Elo	Rank	Win Rate
1	agents	androidnative	1060	35	35
2	agents	fullstack	1054	34	41.1
3	agents	godotgamedev	1089	31	38.5
4	agents	htmlslides	1180	11	45.7
5	agents	mobileapps	1087	41	45.4
6	agents	webapps	1138	28	49.7
7	models	3d	1193	51	52.1
8	models	asciiart	1177	29	48.2
9	models	codecategories	1222	52	51.8
10	models	dataviz	1219	51	52
11	models	gamedev	1196	56	50.1
12	models	svg	1164	38	52.4
13	models	uicomponent	1201	57	49
14	models	website	1231	51	51.8

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	androidnative	1060	35	35
2	agents	fullstack	1054	34	41.1
3	agents	godotgamedev	1089	31	38.5
4	agents	htmlslides	1180	11	45.7
5	agents	mobileapps	1087	41	45.4
6	agents	webapps	1138	28	49.7
7	models	3d	1193	51	52.1
8	models	asciiart	1177	29	48.2
9	models	codecategories	1222	52	51.8
10	models	dataviz	1219	51	52
11	models	gamedev	1196	56	50.1
12	models	svg	1164	38	52.4
13	models	uicomponent	1201	57	49
14	models	website	1231	51	51.8

Pricing · Overrides

1 items · source order preserved

Item 1

Completion: 0.000005
Input Cache Read: 0.0000004
Min Prompt Tokens: 200000
Prompt: 0.0000025

API Details

Item	/pricing/overrides/*/completion	/pricing/overrides/*/input_cache_read	/pricing/overrides/*/min_prompt_tokens	/pricing/overrides/*/prompt
1	0.000005	0.0000004	200000	0.0000025

Recorded Value History

Historical API Field

Input Price · USD/Token

5 of 5 records plotted · 0 excluded for missing or invalid coordinates.

Up to 100 recorded versions, spaced by observation order rather than elapsed time. Array fields use the minimum numeric item in each version. Missing values are omitted. Select a point to open its archived snapshot; comparison actions use the current listing. History begins at the first recorded baseline.

Axis Scale

Select a point to open its listing or add it to compare.

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