Compare · ModelsLive · 2 picked · head to head
Grok 3 Beta vs Grok 4 Fast
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Grok 3 Beta wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · Grok 3 Beta · Grok 4 Fast are still filling in scores.
Hype vs Reality
Attention vs performance
Grok 3 Beta
#16 by perf·no signal
Grok 4 Fast
#93 by perf·no signal
Best value
Grok 4 Fast
18.6x better value than Grok 3 Beta
Grok 3 Beta
7.7 pts/$
$9.00/M
Grok 4 Fast
144.0 pts/$
$0.35/M
Vendor risk
Who is behind the model
xAI
$250.0B·Tier 1
xAI
$250.0B·Tier 1
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| Grok 3 Beta | $3.00 | $15.00 | 131K tokens (~66 books) | $60.00 |
| Grok 4 Fast | $0.20 | $0.50 | 2.0M tokens (~1,000 books) | $2.75 |