GPT-5.4 Pro vs Grok 4.5
Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
GPT-5.4 Pro leads for most workloads.
- Grok 4.5 is ~15× cheaper on input tokens — the budget pick.
Based on BenchLM composite scores, July 2026.
GPT-5.4 Pro
84
Grok 4.5
75
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Grok 4.5 only becomes the better choice if you want the cheaper token bill.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | GPT-5.4 Pro | Δ | Grok 4.5 |
|---|---|---|---|
| Agentic | 89.3 | ← 6.0 | 83.3 |
| Coding | — | — | 64.7 |
| Reasoning | 83.3 | — | — |
| Knowledge | 48.4 | — | — |
| Math | 50.0 | — | — |
| Multimodal | 94.0 | — | — |
Operational Comparison
GPT-5.4 Pro
Grok 4.5
$30 / $180
$2 / $6
74 t/s
N/A
151.79s
N/A
1.05M
500K
Quick Verdict
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Grok 4.5 only becomes the better choice if you want the cheaper token bill.
GPT-5.4 Pro is clearly ahead on the provisional aggregate, 84 to 75. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 Pro's sharpest advantage is in agentic, where it averages 89.3 against 83.3.
GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $2.00 input / $6.00 output per 1M tokens for Grok 4.5. That is roughly 30.0x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 500K for Grok 4.5.
Benchmark Deep Dive
Frequently Asked Questions (2)
Which is better, GPT-5.4 Pro or Grok 4.5?
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 84 to 75.
Which is better for agentic tasks, GPT-5.4 Pro or Grok 4.5?
GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 83.3. Grok 4.5 stays close enough that the answer can still flip depending on your workload.
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