Model comparison
GPT-4o vs Grok 3 [Beta]
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-4o #165 (Supported); Grok 3 [Beta] #171 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-4o and Grok 3 [Beta] share 1 comparable benchmark result. 1 of 8 categories are comparable. 12 results are unique to GPT-4o; 1 to Grok 3 [Beta].
Updated July 20, 2026- Shared results
- 1
- GPT-4o only
- 12
- Grok 3 [Beta] only
- 1
- Comparable categories
- 1 / 8
Pick GPT-4o 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 1 shared benchmark result 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
GPT-4o has the cleaner BenchAlign overall profile here, landing at 41.49 versus 40.43. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
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 | GPT-4o | Δ | Grok 3 [Beta] |
|---|---|---|---|
| Math | GPT-4o0.3 | Margin→ 2.5 | Grok 3 [Beta]2.8 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 0.345%B 3.793%Winner: Grok 3 [Beta]Δ 3.4FrontierMath v2 (Tiers 1-3): GPT-4o scored 0.345%; 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 | GPT-4o | Grok 3 [Beta] | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-4o$2.5 input / $10 output | Grok 3 [Beta]Not available | A complete price comparison is not available. |
| Generation speedtokens per second | GPT-4o131 tok/s | Grok 3 [Beta]Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-4o0.81 s | Grok 3 [Beta]Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-4o128K | Grok 3 [Beta]128K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | GPT-4o | Grok 3 [Beta] | Result |
|---|---|---|---|
| τ²-bench resultsSource | 25.1% | — | Not comparable |
Coding1 benchmarks
| Benchmark | GPT-4o | Grok 3 [Beta] | Result |
|---|---|---|---|
| AA-SciCodeSource | 33.3% | — | Not comparable |
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | GPT-4o | Grok 3 [Beta] | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 11.2% | — | Not comparable |
| AA-GPQA DiamondSource | 54.3% | — | Not comparable |
| AA-HLESource | 3.3% | — | Not comparable |
| AA-Omniscience IndexSource | -10.7% | — | Not comparable |
| AA-Omniscience AccuracySource | 19.7% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 37.9% | — | Not comparable |
MathGrok 3 [Beta] wins2 benchmarks
Multimodal1 benchmarks
| Benchmark | GPT-4o | Grok 3 [Beta] | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 864 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | GPT-4o | Grok 3 [Beta] | Result |
|---|---|---|---|
| AA-IFBenchSource | 34.3% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, GPT-4o or Grok 3 [Beta]?
GPT-4o is ahead on BenchLM's BenchAlign leaderboard, 41.49 to 40.43. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 0.345% and 3.793%.
Which is better for math, GPT-4o or Grok 3 [Beta]?
Grok 3 [Beta] has the edge for math in this comparison, averaging 2.8 versus 0.3. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.
Related Comparisons
Explore More
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.