LLM Comparison

Claude Sonnet 5 vs Grok 4.5: benchmark scores, pricing & comparison.

Side-by-side Claude Sonnet 5 vs Grok 4.5 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Verdict: Claude Sonnet 5 ranks higher (#29 vs #31); Grok 4.5 costs less ($2.00/$6.00 vs $3.00/$15.0 per 1M tokens).

Open live leaderboardClaude Sonnet 5 model pageGrok 4.5 model page
Rank #29 vs #31AskClash overall scores 53.2 vs 52.8.
Pricing $3.00/$15.0 vs $2.00/$6.00Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryAnthropic vs xAI.

Claude Sonnet 5 vs Grok 4.5 benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

MetricClaude Sonnet 5Grok 4.5
Overall Score53.252.8
Leaderboard Rank#29#31
ACB60.857.6
RWT8.59.0
Coding Agent Index—76.4
HLE57.440.3
GPQA91.193.1
SWE-bench85.2—
SWE-Pro63.264.7
SWE-Atlas—83.9
Terminal-Bench14.110.6
DeepSWE53.8—
GDPval-AA1618.01542.8
OSWorld81.2—
Finance Agent—48.3
CharXiv88.3—
MMMU-Pro77.380.4
ARC-AGI 2—52.6
Input Price (per 1M tokens)$3.00$2.00
Output Price (per 1M tokens)$15.0$6.00
Context Window1M500K
Benchmarks Published1214

Claude Sonnet 5 vs Grok 4.5 head-to-head charts

Claude Sonnet 5 leads 5 and Grok 4.5 leads 4 of 9 shared benchmarks. Grok 4.5 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Claude Sonnet 5Grok 4.5
Overall
53.2Claude Sonnet 5
52.8Grok 4.5
ACB
60.8Claude Sonnet 5
57.6Grok 4.5
RWT
8.5Claude Sonnet 5
9.0Grok 4.5
HLE
57.4Claude Sonnet 5
40.3Grok 4.5
GPQA
91.1Claude Sonnet 5
93.1Grok 4.5
SWE-Pro
63.2Claude Sonnet 5
64.7Grok 4.5
Terminal-Bench
14.1Claude Sonnet 5
10.6Grok 4.5
GDPval-AA
1618.0Claude Sonnet 5
1542.8Grok 4.5
MMMU-Pro
77.3Claude Sonnet 5
80.4Grok 4.5
Claude Sonnet 5
Input$3.00
Output$15.0
Workload$6.00
Context1M
Grok 4.5
Input$2.00
Output$6.00
Workload$3.20
Context500K

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Claude Sonnet 5 and Grok 4.5 comparisons

Explore how Claude Sonnet 5 and Grok 4.5 stack up against other top-ranked LLMs.

Claude Opus 5.5 vs Claude Sonnet 5Claude Opus 5.5 vs Grok 4.5Claude Fable 5.1 vs Claude Sonnet 5Claude Fable 5.1 vs Grok 4.5Claude Opus 5 vs Claude Sonnet 5Claude Opus 5 vs Grok 4.5Claude Sonnet 5.5 vs Claude Sonnet 5Claude Sonnet 5.5 vs Grok 4.5Claude Fable 5 vs Claude Sonnet 5Claude Fable 5 vs Grok 4.5

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.