Model comparison
GPT-5.2 vs Grok 4.5
Head-to-head evidence from 11 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-5.2 #64 (Estimated); Grok 4.5 #7 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.2 and Grok 4.5 share 11 comparable benchmark results. 2 of 8 categories are comparable. 17 results are unique to GPT-5.2; 17 to Grok 4.5.
Updated July 23, 2026- Shared results
- 11
- GPT-5.2 only
- 17
- Grok 4.5 only
- 17
- Comparable categories
- 2 / 8
Pick Grok 4.5 if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if coding is the priority.
Confidence note. This is a partial-evidence comparison with 11 shared benchmark results across 4 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Grok 4.5 is clearly ahead on the BenchAlign aggregate, 76.72 to 58.43. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok 4.5's sharpest advantage is in agentic, where it averages 83.3 against 55.7. The single biggest benchmark swing on the page is SWE-bench Pro, 55.6% to 64.7%. GPT-5.2 does hit back in coding, so the answer changes if that is the part of the workload you care about most.
GPT-5.2 is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $2.00 input / $6.00 output per 1M tokens for Grok 4.5. That is roughly 2.3x on output cost alone. Grok 4.5 gives you the larger context window at 500K, compared with 400K for GPT-5.2.
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-5.2 | Δ | Grok 4.5 |
|---|---|---|---|
| Agentic | GPT-5.255.7 | Margin→ 27.6 | Grok 4.583.3 |
| Coding | GPT-5.270.6 | Margin← 5.9 | Grok 4.564.7 |
| Reasoning | GPT-5.252.9 | MarginNo overlap | Grok 4.5Not measured |
| Knowledge | GPT-5.292.4 | MarginNo overlap | Grok 4.5Not measured |
| Math | GPT-5.235.2 | MarginNo overlap | Grok 4.5Not measured |
| Multimodal | GPT-5.280.4 | MarginNo overlap | Grok 4.5Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Pro
CodingA 55.6%B 64.7%Winner: Grok 4.5Δ 9.1SWE-bench Pro: GPT-5.2 scored 55.6%; Grok 4.5 scored 64.7%. Grok 4.5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.2 | Grok 4.5 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.2$1.75 input / $14 output | Grok 4.5$2 input / $6 output | Grok 4.5 has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.273 tok/s | Grok 4.5Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.2130.34 s | Grok 4.5Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.2400K | Grok 4.5500K | Grok 4.5 lists the larger context window. |
Benchmark Deep Dive
AgenticGrok 4.5 wins16 benchmarks
| Benchmark | GPT-5.2 | Grok 4.5 | Result |
|---|---|---|---|
| BrowseCompSource | 65.8% | — | Not comparable |
| OSWorld-VerifiedSource | 47.3% | — | Not comparable |
| τ²-bench resultsSource | 84.8% | — | Not comparable |
| Gert LabsSource | 46.54% | — | Not comparable |
| JobBenchSource | 34.3% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 83.3% | Not comparable |
| deepSweSource | — | 53% | Not comparable |
| AA Agentic IndexSource | — | 45.7% | Not comparable |
| GDPval-AASource | — | 51.7% | Not comparable |
| GDPval-AASource | — | 1535 | Not comparable |
| AA BriefcaseSource | — | 1323 | Not comparable |
| AA AutomationBenchSource | — | 51.4% | Not comparable |
| AA EnterpriseOps-GymSource | — | 40.8% | Not comparable |
| AA Harvey LABSource | — | 92.4% | Not comparable |
| AA Tau3 BankingSource | — | 32.6% | Not comparable |
| aaTerminalBench21Source | — | 81.6% | Not comparable |
CodingGPT-5.2 wins9 benchmarks
| Benchmark | GPT-5.2 | Grok 4.5 | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 80% | — | Not comparable |
| SWE-bench ProSource | 55.6% | 64.7% | Grok 4.5 leads |
| Vibe Code BenchSource | 53.50% | — | Not comparable |
| AA-SciCodeSource | 52.1% | 54.1% | Grok 4.5 leads |
| SWE MultilingualSource | — | 78% | Not comparable |
| Terminal-Bench 2.0Source | — | 83.3% | Not comparable |
| cursorBench32Source | — | 66.7% | Not comparable |
| VulcanBench v3Source | — | 91.3% | Not comparable |
| AA Coding IndexSource | — | 72.5% | Not comparable |
Reasoning3 benchmarks
Knowledge7 benchmarks
| Benchmark | GPT-5.2 | Grok 4.5 | Result |
|---|---|---|---|
| GPQASource | 92.4% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 42.2% | 53.8% | Grok 4.5 leads |
| AA-GPQA DiamondSource | 90.3% | 93.1% | Grok 4.5 leads |
| AA-HLESource | 35.4% | 40.3% | Grok 4.5 leads |
| AA-Omniscience IndexSource | -1.0% | 26.4% | Grok 4.5 leads |
| AA-Omniscience AccuracySource | 43.8% | 52.1% | Grok 4.5 leads |
| AA-Omniscience Hallucination RateSource | 79.7% | 53.5% | Grok 4.5 leads |
Math3 benchmarks
Multimodal6 benchmarks
Inst. Following1 benchmarks
| Benchmark | GPT-5.2 | Grok 4.5 | Result |
|---|---|---|---|
| AA-IFBenchSource | 75.4% | — | Not comparable |
Frequently Asked Questions (3)
Which is better, GPT-5.2 or Grok 4.5?
Grok 4.5 is ahead on BenchLM's BenchAlign leaderboard, 76.72 to 58.43. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 55.6% and 64.7%.
Which is better for coding, GPT-5.2 or Grok 4.5?
GPT-5.2 has the edge for coding in this comparison, averaging 70.6 versus 64.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, GPT-5.2 or Grok 4.5?
Grok 4.5 has the edge for agentic tasks in this comparison, averaging 83.3 versus 55.7. GPT-5.2 stays close enough that the answer can still flip depending on your workload.
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.