Model Comparison

Gemini 3 Flash vs Grok-4.20 Beta Non-ReasoningWhich is better in 2026?

Comparing Gemini 3 Flash and Grok-4.20 Beta Non-Reasoning across benchmarks, pricing, and capabilities.

Verdict: Gemini 3 Flash vs Grok-4.20 Beta Non-Reasoning — which is better?

Gemini 3 Flash (by Google) and Grok-4.20 Beta Non-Reasoning (by xAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, Gemini 3 Flash is roughly 2.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok-4.20 Beta Non-Reasoning also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3 Flash if…

  • cost matters — it's about 2.7x cheaper per token

Choose Grok-4.20 Beta Non-Reasoning if…

  • you process long inputs — it offers a 2,000,000 token context window
  • you want the most recent training data — it shipped Mar 2026
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Gemini 3 Flash and Grok-4.20 Beta Non-Reasoningdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 4.0x cheaper than Grok-4.20 Beta Non-Reasoning ($2.00/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 2.0x cheaper than Grok-4.20 Beta Non-Reasoning ($6.00/1M tokens).

In conclusion, Grok-4.20 Beta Non-Reasoning is more expensive than Gemini 3 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Jun 19 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
xAI
Grok-4.20 Beta Non-Reasoning
Input tokens$2.00
Output tokens$6.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok-4.20 Beta Non-Reasoning accepts 2,000,000 input tokens compared to Gemini 3 Flash's 1,000,000 tokens. Gemini 3 Flash can generate longer responses up to 65,536 tokens, while Grok-4.20 Beta Non-Reasoning is limited to 30,000 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
xAI
Grok-4.20 Beta Non-Reasoning
Input2,000,000 tokens
Output30,000 tokens
Fri Jun 19 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and Grok-4.20 Beta Non-Reasoning support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3 Flash

Text
Images
Audio
Video

Grok-4.20 Beta Non-Reasoning

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3 Flash

Proprietary

Closed source

Grok-4.20 Beta Non-Reasoning

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Grok-4.20 Beta Non-Reasoning was released on 2026-03-09.

Grok-4.20 Beta Non-Reasoning is 3 months newer than Gemini 3 Flash.

Gemini 3 Flash

Dec 17, 2025

6 months ago

Grok-4.20 Beta Non-Reasoning

Mar 9, 2026

3 months ago

2mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Grok-4.20 Beta Non-Reasoning's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Grok-4.20 Beta Non-Reasoning's cutoff date.

Gemini 3 Flash

Jan 2025

Grok-4.20 Beta Non-Reasoning

—

Provider Availability

Gemini 3 Flash is available from Google. Grok-4.20 Beta Non-Reasoning is available from xAI.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

Grok-4.20 Beta Non-Reasoning

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $6.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Less expensive input tokens
Less expensive output tokens
xAI
Larger context window (2,000,000 tokens)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
xAI
Grok-4.20 Beta Non-Reasoning

FAQ

Common questions about Gemini 3 Flash vs Grok-4.20 Beta Non-Reasoning.

Which is better, Gemini 3 Flash or Grok-4.20 Beta Non-Reasoning?

Gemini 3 Flash (Google) and Grok-4.20 Beta Non-Reasoning (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Gemini 3 Flash compare to Grok-4.20 Beta Non-Reasoning in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%.

Is Gemini 3 Flash cheaper than Grok-4.20 Beta Non-Reasoning?

Gemini 3 Flash is 4.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. Grok-4.20 Beta Non-Reasoning costs $2.00/M input and $6.00/M output via xai.

What are the context window sizes for Gemini 3 Flash and Grok-4.20 Beta Non-Reasoning?

Gemini 3 Flash supports 1.0M tokens and Grok-4.20 Beta Non-Reasoning supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and Grok-4.20 Beta Non-Reasoning?

Key differences include context window (1.0M vs 2.0M), input pricing ($0.50 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and Grok-4.20 Beta Non-Reasoning?

Gemini 3 Flash is developed by Google and Grok-4.20 Beta Non-Reasoning is developed by xAI.

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