Model Comparison
Claude 3.7 Sonnet vs Grok-2Which is better in 2026?
Claude 3.7 Sonnet significantly outperforms across most benchmarks. Grok-2 is 1.5x cheaper per token.
Verdict: Claude 3.7 Sonnet vs Grok-2 — which is better?
Claude 3.7 Sonnet (by Anthropic) and Grok-2 (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.
Claude 3.7 Sonnet outperforms in 2 benchmarks (GPQA, MMMU), while Grok-2 is better at 0 benchmarks. Claude 3.7 Sonnet significantly outperforms across most benchmarks.
On price, Grok-2 is roughly 1.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude 3.7 Sonnet also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Claude 3.7 Sonnet if…
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
- you process long inputs — it offers a 200,000 token context window
- you want the most recent training data — it shipped Feb 2025
Choose Grok-2 if…
- cost matters — it's about 1.5x cheaper per token
Performance Benchmarks
Comparative analysis across standard metrics
Claude 3.7 Sonnet outperforms in 2 benchmarks (GPQA, MMMU), while Grok-2 is better at 0 benchmarks.
Claude 3.7 Sonnet significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) is 1.5x more expensive than Grok-2 ($2.00/1M tokens).
For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) is 1.5x more expensive than Grok-2 ($10.00/1M tokens).
In conclusion, Claude 3.7 Sonnet is more expensive than Grok-2.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude 3.7 Sonnet accepts 200,000 input tokens compared to Grok-2's 128,000 tokens. Claude 3.7 Sonnet can generate longer responses up to 128,000 tokens, while Grok-2 is limited to 8,000 tokens.
Input Capabilities
Supported data types and modalities
Both Claude 3.7 Sonnet and Grok-2 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude 3.7 Sonnet
Grok-2
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude 3.7 Sonnet was released on 2025-02-24, while Grok-2 was released on 2024-08-13.
Claude 3.7 Sonnet is 7 months newer than Grok-2.
Feb 24, 2025
1.3 years ago
6mo newerAug 13, 2024
1.8 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. Grok-2 is available from xAI.
Claude 3.7 Sonnet
Grok-2
Outputs Comparison
Key Takeaways
Claude 3.7 Sonnet
View detailsAnthropic
Claude 3.7 SonnetGrok-2Detailed Comparison
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FAQ
Common questions about Claude 3.7 Sonnet vs Grok-2.