Grok 4 Max: pricing, context window and benchmarks
Grok 4 Max is a frontier model from xAI. It offers a 2,000,000-token context window, costs $19.70 per million input tokens and $98.29 per million output tokens, and averages 86.6 across the index's benchmark suite.
Pricing
Grok 4 Max costs $19.70 per million input tokens and $98.29 per million output tokens. A blended 3:1 input-to-output mix works out to about $39.35 per million tokens. Cached input is listed at $2.85 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $19.70 | per 1M tokens |
| Output | $98.29 | per 1M tokens |
| Cached input | $2.85 | per 1M tokens |
| Blended 3:1 | $39.35 | estimate per 1M tokens |
| 1M in + 1M out | $117.99 | estimate |
Benchmarks
Scores below are modelled estimates on a 0–100 scale. Use them to compare relative position, not as official vendor results.
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 87.8 | 21 | 97th | |
| GPQA Diamond | 82.0 | 29 | 95th | |
| SWE-bench Verified | 74.3 | 48 | 92th | |
| HumanEval | 93.4 | 8 | 99th | |
| MATH-500 | 94.6 | 5 | 99th | |
| AIME 2025 | 87.3 | 19 | 97th | |
| LiveCodeBench | 81.3 | 30 | 95th | |
| IFEval | 92.5 | 30 | 95th | |
| TruthfulQA | 85.8 | 54 | 91th | |
| HellaSwag | 94.1 | 11 | 98th | |
| MMMU | 80.0 | 56 | 91th | |
| Arena Elo | 1491.4 | 7 | 99th |
What Grok 4 Max is good for
Grok 4 Max sits in the frontier tier of the index. It is aimed at work where answer quality matters more than unit cost: hard reasoning, multi-step coding, document analysis and multimodal inputs. At $19.70 per million input tokens and a 2,000,000-token context window, it is a premium option, so reserve it for tasks where a cheaper model measurably fails.
Strengths
- Top-tier average benchmark score (86.6), placing it #24 of 600.
- Large 2,000,000-token context window for long documents and agent traces.
- Accepts more than text, including image input where the provider supports it.
- Reasoning-oriented profile, useful for multi-step problems and structured analysis.
- Coding benchmarks are a relative strength within its tier.
Trade-offs
- Proprietary licence: you cannot download the weights or self-host the model.
- Premium input pricing at $19.70 per million tokens.
- Cost can climb quickly on long outputs and high-volume traffic.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Claude Sonnet 4.5 Pro | Anthropic | 1000000 | $18.73 | 86.7 |
| Grok 4 Turbo | xAI | 1000000 | $19.21 | 86.7 |
| Grok 4 Max | xAI | 2000000 | $19.70 | 86.6 |
| o4 Turbo | OpenAI | 2000000 | $19.34 | 86.6 |
| Grok 4 | xAI | 200000 | $17.90 | 86.5 |
| Gemini 3 Pro Turbo | Google DeepMind | 400000 | $19.62 | 86.4 |
FAQ
How much does Grok 4 Max cost?
Grok 4 Max is listed at $19.70 per million input tokens and $98.29 per million output tokens. Cached input is $2.85 per million tokens. A blended 3:1 input-to-output mix is about $39.35 per million tokens.
What is the context window of Grok 4 Max?
Grok 4 Max has a context window of 2,000,000 tokens and can emit up to 16,384 output tokens per request in this index.
Is Grok 4 Max open weights?
No. Grok 4 Max is a proprietary model with a proprietary licence, so you cannot download the weights.
How does Grok 4 Max score on benchmarks?
Grok 4 Max averages 86.6 across the scored benchmarks in this index, ranking #24 of 600 models. Its strongest relative result is Arena Elo at 1491.4.
What is Grok 4 Max best for?
Grok 4 Max sits in the frontier tier of the index. It is aimed at work where answer quality matters more than unit cost: hard reasoning, multi-step coding, document analysis and multimodal inputs. At $19.70 per million input tokens and a 2,000,000-token context window, it is a premium option, so reserve it for tasks where a cheaper model measurably fails.