Model comparison
Grok 4 vs Grok 3
- Input
- $3.00 / 1M tokens
- Output
- $15.00 / 1M tokens
- Context
- 256K
- Released
- 2025-07-09
- Input
- $3.00 / 1M tokens
- Output
- $15.00 / 1M tokens
- Context
- 131K tokens (xAI API). xAI marketed a 1M-token capability for the model.
- Released
- 2025-02-17
Grok 3 scores higher on 2 of the 2 benchmarks both models report; both charge the same $3 per 1M input tokens; Grok 4 has the larger context window (256K vs 131K).
Specs and pricing side by side
| Spec | Grok 4 | Grok 3 |
|---|---|---|
| Maker | xAI (Grok) | xAI (Grok)same |
| Released | 2025-07-09 | 2025-02-17 |
| Context window | 256K | 131K tokens (xAI API). xAI marketed a 1M-token capability for the model. |
| Max output | 8K | not published |
| Input price | $3.00 / 1M tokens | $3.00 / 1M tokenssame |
| Output price | $15.00 / 1M tokens | $15.00 / 1M tokenssame |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text |
| Knowledge cutoff | November 2024 | November 2024same |
Not published by either maker: parameters.
Benchmarks both models report
| Benchmark | Grok 4 | Grok 3 |
|---|---|---|
| AIME 2025 | 91.7% | 93.3% |
| LiveCodeBench | 79% | 79.4% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Grok 4 if…
- You need the longer context (256K vs 131K).
- You need Vision input, which Grok 3 lacks.
- Your use case is: hard STEM and competition-math problem solving (AIME/HMMT/USAMO-style reasoning).
Pick Grok 3 if…
- You care about AIME 2025, LiveCodeBench (it scores higher on 2 shared benchmarks).
- Your use case is: math and competition-style problem solving with Think mode.
FAQ
Which is better, Grok 4 or Grok 3?
Grok 3 scores higher on 2 of the 2 benchmarks both models report; both charge the same $3 per 1M input tokens; Grok 4 has the larger context window (256K vs 131K). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How do Grok 4 and Grok 3 pricing compare?
Grok 4: $3.00 / 1M tokens input, $15.00 / 1M tokens output. Grok 3: $3.00 / 1M tokens input, $15.00 / 1M tokens output (list API prices as published by each maker).
What are the context windows of Grok 4 and Grok 3?
Grok 4 offers 256K with up to 8K output; Grok 3 offers 131K tokens (xAI API). xAI marketed a 1M-token capability for the model..
Is Grok 4 newer than Grok 3?
Grok 4 was released 2025-07-09; Grok 3 was released 2025-02-17.