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MODEL LIBRARY

xAIxai / grok-4.20-0309-reasoning

Grok 4.20 (Reasoning)

Reasoning Grok for document-heavy analysis and long-horizon tool use

Provider
xAI (xai)
Model identifier
grok-4.20-0309-reasoning
Library category
Chat
Source update
2026-03-09
Release date
2026-03-09
Provider documentation
https://docs.x.ai/docs/models

Source pricing and conditions

Costs retain the source structure, tiers and conditions. These snapshot values are not Allgate API quotes. Cost currency and provider billing currency are separate fields; each defaults to USD when absent.

Cost currency: USD · Provider billing currency: USD. Input, output, reasoning, cache and audio token fields use the cost currency per million tokens. Explicit per-image, per-second and per-10,000-character fields retain their named units and resolution conditions.

Tier prices apply above the stated size. When tiers exist, source logic ignores the legacy context_over_200k field. Scheduled prices override stated fields within their window; omitted fields inherit base prices. Source pricing schema

cache_read
0.2
context_over_200k
cache_read
0.4
input
2.5
output
5
input
1.25
output
2.5
tiers
  1. cache_read
    0.4
    input
    2.5
    output
    5
    tier
    size
    200000
    type
    context

Model metadata

Original source field names and values are preserved. False, zero, empty objects and missing values remain distinct. Missing capabilities are not inferred from a name, category or related version.

attachment
true
description
Reasoning Grok for document-heavy analysis and long-horizon tool use
family
grok
id
grok-4.20-0309-reasoning
last_updated
2026-03-09
limit
context
1000000
output
30000
modalities
input
  1. text
  2. image
  3. pdf
output
  1. text
name
Grok 4.20 (Reasoning)
open_weights
false
reasoning
true
reasoning_options
[]
release_date
2026-03-09
structured_output
true
temperature
true
tool_call
true

Provider reference

Provider documentation and billing metadata belong to the listed source provider. They do not describe Allgate routing or account configuration.

id
xai
name
xAI
doc
https://docs.x.ai/docs/models

About this reference

This library reproduces the public llm-metadata snapshot: 592 model entries from 50 providers. This community maintained source does not independently verify every provider claim. Model identifiers belong to their listed provider; matching names from different providers remain separate entries. llm-metadata

Reference metadata does not establish Allgate availability or prices. Check the live model catalogue for current service and rates. Missing fields remain unknown. Source update dates are not substituted for release dates; retrieval dates are not model update dates. View live catalogue

Source: llm-metadata · Apache-2.0 · Retrieved · Source generated · Snapshot provenance