AI Models · Compare
Claude 4 Sonnet vs Grok 3
Side-by-side intelligence, speed, price, benchmarks, strengths and weaknesses.
Head to head
Spec
Claude 4 Sonnet
Grok 3
Intelligence index↑ better
Winner75
74
Speed↑ better
Winner95 tok/s
75 tok/s
Time to first token↓ better
0.85 s
Winner0.6 s
Context window↑ better
500k
Winner1M
Max output↑ better
16k
16k
Input price↓ better
$3.00 / 1M tokens
$3.00 / 1M tokens
Output price↓ better
$15.00 / 1M tokens
$15.00 / 1M tokens
Blended price↓ better
$6.00 / 1M tokens
$6.00 / 1M tokens
License
Proprietary
Proprietary
Input modalities
text, image
text, image
Output modalities
text
text
Benchmark showdown
MMLU
Claude 4 Sonnet
88.5
Grok 3
88.0
MMLU Pro
Claude 4 Sonnet
75.2
Grok 3
76.0
GPQA
Claude 4 Sonnet
58.0
Grok 3
62.0
MATH
Claude 4 Sonnet
82.0
Grok 3
88.5
HumanEval
Claude 4 Sonnet
93.2
Grok 3
90.0
Strengths, weaknesses and best-for
Claude 4 Sonnet
Strengths
- Best $/HumanEval ratio
- Fast
- 500k context
Weaknesses
- Behind Opus on hardest reasoning
Best for
- Production coding tools
- Long-context RAG
- Tool use
Grok 3
Strengths
- Live X data
- 1M context
- Strong reasoning mode
Weaknesses
- Smaller ecosystem
- Less tool-use tooling
Best for
- Real-time research
- Social-aware apps
Quick verdict
- Pick Claude 4 Sonnet if you want it smarter and faster.
- Pick Grok 3 if you want it longer context.
Auto-generated from the spec sheet. Always validate on your own evals.
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