Model comparison
Claude 3.5 Sonnet vs Grok 3 [Beta]
Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude 3.5 Sonnet #132 (Estimated); Grok 3 [Beta] #171 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 3.5 Sonnet and Grok 3 [Beta] share 2 comparable benchmark results. 1 of 8 categories are comparable. 2 results are unique to Claude 3.5 Sonnet; 0 to Grok 3 [Beta].
Updated July 20, 2026- Shared results
- 2
- Claude 3.5 Sonnet only
- 2
- Grok 3 [Beta] only
- 0
- Comparable categories
- 1 / 8
Pick Claude 3.5 Sonnet if you want the stronger benchmark profile. Grok 3 [Beta] only becomes the better choice if mathematics is the priority.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Claude 3.5 Sonnet is clearly ahead on the BenchAlign aggregate, 47.74 to 40.43. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 3.5 Sonnet gives you the larger context window at 200K, compared with 128K for Grok 3 [Beta].
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude 3.5 Sonnet | Δ | Grok 3 [Beta] |
|---|---|---|---|
| Math | Claude 3.5 Sonnet1.6 | Margin→ 1.2 | Grok 3 [Beta]2.8 |
| Coding | Claude 3.5 Sonnet49.0 | MarginNo overlap | Grok 3 [Beta]Not measured |
| Knowledge | Claude 3.5 Sonnet59.4 | MarginNo overlap | Grok 3 [Beta]Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 2.069%B 3.793%Winner: Grok 3 [Beta]Δ 1.7FrontierMath v2 (Tiers 1-3): Claude 3.5 Sonnet scored 2.069%; Grok 3 [Beta] scored 3.793%. Grok 3 [Beta] wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 3.5 Sonnet | Grok 3 [Beta] | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 3.5 Sonnet$3 input / $15 output | Grok 3 [Beta]Not available | A complete price comparison is not available. |
| Generation speedtokens per second | Claude 3.5 SonnetNot available | Grok 3 [Beta]Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude 3.5 SonnetNot available | Grok 3 [Beta]Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude 3.5 Sonnet200K | Grok 3 [Beta]128K | Claude 3.5 Sonnet lists the larger context window. |
Benchmark Deep Dive
Frequently Asked Questions (2)
Which is better, Claude 3.5 Sonnet or Grok 3 [Beta]?
Claude 3.5 Sonnet is ahead on BenchLM's BenchAlign leaderboard, 47.74 to 40.43. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 2.069% and 3.793%.
Which is better for math, Claude 3.5 Sonnet or Grok 3 [Beta]?
Grok 3 [Beta] has the edge for math in this comparison, averaging 2.8 versus 1.6. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.
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