XA
Grok 4
xAI
xAI model product
Grok 4.20 Beta Reasoning
20 model family.
Updated Aug 12, 2026. Default version: Grok-4.20 Beta Reasoning
LLMBoard score57.1Grok-4.20 Beta Reasoning
Coverage0%1 benchmark families
Context window2MTokens
Official input priceN/AOfficial price unavailable
Grok 4.20 Beta Reasoning Specifications
Technical details for the model's default version.
- Version
- Grok-4.20 Beta Reasoning
- Released
- Mar 9, 2026
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- 2M
- Max output
- 30K
- Inputs
- image, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Grok 4.20 Beta Reasoning Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
No capability profile
No version of this model currently has enough benchmark coverage for a score.
Grok 4.20 Beta Reasoning Benchmark Results
Benchmark scores for Grok-4.20 Beta Reasoning.
| Finance Agent v2 | 28.5% | 25 | 26 | 4.0% | B |
Grok 4.20 Beta Reasoning Arena Results
Preference and agent-evaluation results for the default version.
| document style control | overall | 30 | 1439.7 | 18,666 | N/A | |
| text style control | overall | 31 | 1471.6 | 62,399 | N/A | |
| document | overall | 33 | 1413.9 | 18,666 | N/A | |
| vision style control | overall | 36 | 1255.0 | 24,509 | N/A | |
| text | overall | 38 | 1450.7 | 62,399 | N/A | |
| vision | overall | 38 | 1262.2 | 24,509 | N/A | |
| text factuality | overall | 39 | 1455.3 | 62,308 | N/A | |
| webdev | overall | 71 | 1373.7 | 14,569 | N/A |
Grok 4.20 Beta Reasoning Runtime Performance
Provider-specific output speed and catalog latency for Grok-4.20 Beta Reasoning. Runtime does not affect the capability score.
No runtime data
Browse runtime rankingsNo provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Grok 4.20 Beta Reasoning Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- From $1.25 input, $2.5 output per 1M via Vercel AI Gateway
- Tracked offerings
- 2
| Vercel AI Gateway | xai/grok-4.20-reasoning-beta | global | $1.25 | $2.5 | 2M | |
| 302.AI | grok-4.20-beta-0309-reasoning | global | $2 | $6 | 2M |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Grok 4.20 Beta Reasoning Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Grok-4.20 Beta Reasoning | 57.1 | N/A | 2M | 30K | No | Proprietary |
What is Grok 4.20 Beta Reasoning?
Key information about Grok 4.20 Beta Reasoning and its available data.
20 model family. Released as a beta on March 9, 2026, it uses thinking tokens for enhanced chain-of-thought reasoning, featuring a 2 million token context window for complex problem-solving tasks.
Data as of 2026-08-11.
Grok 4.20 Beta Reasoning vs nearby models
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FAQ
Common questions about Grok 4.20 Beta Reasoning.
When was Grok 4.20 Beta Reasoning released?
Grok 4.20 Beta Reasoning's default version was released on Mar 9, 2026.
How much does Grok 4.20 Beta Reasoning cost?
No official standard PAYG price is currently available for Grok 4.20 Beta Reasoning. The lowest tracked third-party offer starts at $1.25 input and $2.5 output via Vercel AI Gateway.
Who created Grok 4.20 Beta Reasoning?
Grok 4.20 Beta Reasoning was created by xAI.
What is the context window for Grok 4.20 Beta Reasoning?
The default version has a 2M token context window.
Is Grok 4.20 Beta Reasoning open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Grok 4.20 Beta Reasoning?
2 provider offerings are linked to the default version.
What models should I compare Grok 4.20 Beta Reasoning with?
Nearby ranked alternatives include MiniMax M2.7, DeepSeek-V3.2, Qwen3.5 27B.