Model Comparison

Grok-3 vs Llama 3.1 70B Instruct

Grok-3 significantly outperforms across most benchmarks. Llama 3.1 70B Instruct is 30.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Grok-3 outperforms in 1 benchmarks (GPQA), while Llama 3.1 70B Instruct is better at 0 benchmarks.

Grok-3 significantly outperforms across most benchmarks.

Mon Apr 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Llama 3.1 70B Instruct costs less

For input processing, Grok-3 ($3.00/1M tokens) is 15.0x more expensive than Llama 3.1 70B Instruct ($0.20/1M tokens).

For output processing, Grok-3 ($15.00/1M tokens) is 75.0x more expensive than Llama 3.1 70B Instruct ($0.20/1M tokens).

In conclusion, Grok-3 is more expensive than Llama 3.1 70B Instruct.*

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

Lowest available price from all providers
Mon Apr 20 2026 • llm-stats.com
xAI
Grok-3
Input tokens$3.00
Output tokens$15.00
Best providerxAI
Meta
Llama 3.1 70B Instruct
Input tokens$0.20
Output tokens$0.20
Best providerLambda
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Context Window

Maximum input and output token capacity

Both models have the same input context window of 128,000 tokens. Llama 3.1 70B Instruct can generate longer responses up to 128,000 tokens, while Grok-3 is limited to 8,000 tokens.

xAI
Grok-3
Input128,000 tokens
Output8,000 tokens
Meta
Llama 3.1 70B Instruct
Input128,000 tokens
Output128,000 tokens
Mon Apr 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-3 supports multimodal inputs, whereas Llama 3.1 70B Instruct does not.

Grok-3 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-3

Text
Images
Audio
Video

Llama 3.1 70B Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-3 is licensed under a proprietary license, while Llama 3.1 70B Instruct uses Llama 3.1 Community License.

License differences may affect how you can use these models in commercial or open-source projects.

Grok-3

Proprietary

Closed source

Llama 3.1 70B Instruct

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

Grok-3 was released on 2025-02-17, while Llama 3.1 70B Instruct was released on 2024-07-23.

Grok-3 is 7 months newer than Llama 3.1 70B Instruct.

Grok-3

Feb 17, 2025

1.2 years ago

6mo newer
Llama 3.1 70B Instruct

Jul 23, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

Grok-3 has a documented knowledge cutoff of 2024-11-17, while Llama 3.1 70B Instruct's cutoff date is not specified.

We can confirm Grok-3's training data extends to 2024-11-17, but cannot make a direct comparison without Llama 3.1 70B Instruct's cutoff date.

Grok-3

Nov 2024

Llama 3.1 70B Instruct

—

Provider Availability

Grok-3 is available from xAI. Llama 3.1 70B Instruct is available from Lambda, DeepInfra, Hyperbolic, Groq, Cerebras, Together, Fireworks, Bedrock, Sambanova.

Grok-3

xai logo
xAI
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Llama 3.1 70B Instruct

lambda logo
Lambda
Input Price:Input: $0.20/1MOutput Price:Output: $0.20/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.35/1MOutput Price:Output: $0.40/1M
hyperbolic logo
Hyperbolic
Input Price:Input: $0.40/1MOutput Price:Output: $0.40/1M
groq logo
Groq
Input Price:Input: $0.59/1MOutput Price:Output: $0.78/1M
cerebras logo
Cerebras
Input Price:Input: $0.60/1MOutput Price:Output: $0.60/1M
together logo
Together
Input Price:Input: $0.89/1MOutput Price:Output: $0.89/1M
fireworks logo
Fireworks
Input Price:Input: $0.89/1MOutput Price:Output: $0.89/1M
bedrock logo
AWS Bedrock
Input Price:Input: $0.89/1MOutput Price:Output: $0.89/1M
sambanova logo
Sambanova
Input Price:Input: $5.00/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

xAI
Supports multimodal inputs
Higher GPQA score (84.6% vs 41.7%)
Meta
Less expensive input tokens
Less expensive output tokens
Has open weights
xAIGrok-3
MetaLlama 3.1 70B Instruct
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
xAI
Grok-3
Meta
Llama 3.1 70B Instruct

FAQ

Common questions about Grok-3 vs Llama 3.1 70B Instruct

Grok-3 significantly outperforms across most benchmarks. Grok-3 is made by xAI and Llama 3.1 70B Instruct is made by Meta. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Grok-3 scores AIME 2024: 93.3%, AIME 2025: 93.3%, GPQA: 84.6%, LiveCodeBench: 79.4%, MMMU: 78.0%. Llama 3.1 70B Instruct scores GSM-8K (CoT): 95.1%, ARC-C: 94.8%, API-Bank: 90.0%, IFEval: 87.5%, Multilingual MGSM (CoT): 86.9%.
Llama 3.1 70B Instruct is 15.0x cheaper for input tokens. Grok-3 costs $3.00/M input and $15.00/M output via xai. Llama 3.1 70B Instruct costs $0.20/M input and $0.20/M output via lambda.
Grok-3 supports 128K tokens and Llama 3.1 70B Instruct supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($3.00 vs $0.20/M), multimodal support (yes vs no), licensing (Proprietary vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.
Grok-3 is developed by xAI and Llama 3.1 70B Instruct is developed by Meta.