Claude 3.5 Sonnet vs Grok-2
Claude 3.5 Sonnet leads the LLM Stats Score 18.6 to 10.9. Grok-2 is 1.5x cheaper per token.
Anthropic · xAI · Updated for 2026
Which is better?
Claude 3.5 Sonnet leads the overall LLM Stats Score 18.6 to 10.9, ranking #233 overall.
In the 8 individual benchmarks reported for both models, Claude 3.5 Sonnet wins 7; this is a narrower head-to-head signal than the composite indexes.
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 3.5 Sonnet also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude 3.5 Sonnet
- overall performance matters — it scores 18.6 and ranks #233 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 7 of 8 exact shared results
- you process long inputs — it offers a 200,000 token context window
- you want the most recent training data — it shipped Oct 2024
Choose Grok-2
- cost matters — it's about 1.5x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
19 reported for Claude 3.5 Sonnet · 8 for Grok-2
Claude 3.5 Sonnet outperforms in 7 benchmarks (DocVQA, GPQA, HumanEval, MATH, MMLU, MMLU-Pro, MMMU), while Grok-2 is better at 1 benchmark (MathVista).
Claude 3.5 Sonnet significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 1.5x more expensive than Grok-2 ($2.00/1M tokens).
For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 1.5x more expensive than Grok-2 ($10.00/1M tokens).
In conclusion, Claude 3.5 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 3.5 Sonnet accepts 200,000 input tokens compared to Grok-2's 128,000 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while Grok-2 is limited to 8,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude 3.5 Sonnet and Grok-2 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude 3.5 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 3.5 Sonnet was released on 2024-10-22, while Grok-2 was released on 2024-08-13.
Claude 3.5 Sonnet is 2 months newer than Grok-2.
Oct 22, 2024
2.0 years ago
2mo newerAug 13, 2024
2.2 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 3.5 Sonnet is available from Anthropic, Bedrock, Google. Grok-2 is available from xAI.
Claude 3.5 Sonnet
Grok-2
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3.5 Sonnet and Grok-2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3.5 Sonnet vs Grok-2.