Compare / head-to-head
Grok 4.3vsGrok 4.5
Grok 4.5 leads 6 of 6 shared benchmarks. Grok 4.3 is 2.1x cheaper per token. Grok 4.3 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 6
Grok 4.5 leads
Cheaper per token
Grok 4.3
2.1x cheaper, input + output
Larger context
Grok 4.3
1M tokens
Provider uptime (30d)
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xAI
Grok 4.3
xAI
textvision
Quality
Benchmark matrix
6 shared · 0 only Grok 4.3 · 0 only Grok 4.5| Benchmark | Grok 4.3 | Grok 4.5 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| GPQA Diamond | 88.8% ↗epoch | 93.4% ↗epoch | -4.6 pt | Grok 4.5 |
| LMArena Elo | 1397.7 ↗ | 1450.1 ↗ | -52.4 | Grok 4.5 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 14.6% ↗epoch | 24.4% ↗epoch | -9.8 pt | Grok 4.5 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 42.8% ↗epoch | 57.2% ↗epoch | -14.4 pt | Grok 4.5 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 93.3% ↗epoch | 97.8% ↗epoch | -4.5 pt | Grok 4.5 |
| SimpleQA Verified | 33.2% ↗epoch | 48.3% ↗epoch | -15.1 pt | Grok 4.5 |
| Only Grok 4.3 reports · 0 | ||||
| Grok 4.3 reports nothing Grok 4.5 does not. | ||||
| Only Grok 4.5 reports · 0 | ||||
| Grok 4.5 reports nothing Grok 4.3 does not. | ||||
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Grok 4.3 minus Grok 4.5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Grok 4.3 | Grok 4.5 | Edge |
|---|---|---|---|
| Context window | 1M tokens | 500K tokens | Grok 4.3 |
| Max output | — | — | — |
| Input price / 1M | $1.25 ↗ | $2 ↗ | Grok 4.3 |
| Output price / 1M | $2.5 ↗ | $6 ↗ | Grok 4.3 |
| Cached input / 1M | $0.2 ↗ | $0.3 ↗ | Grok 4.3 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $3.75 | $8 | Grok 4.3 |
| Modalities | text · vision | text · vision | Tie |
| Released | — | 2026-07-08 | — |
| Cited benchmark scores | 6 | 6 | — |
Reliability
xAI status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Grok 4.3 vs …
Models sharing the most benchmarksMore matchups
Grok 4.5 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Grok 4.3 and Grok 4.5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.