Grok 4 Nano: pricing, context window and benchmarks
Grok 4 Nano is a mid-range model from xAI. It offers a 16,384-token context window, costs $8.97 per million input tokens and $39.88 per million output tokens, and averages 72.7 across the index's benchmark suite.
Pricing
Grok 4 Nano costs $8.97 per million input tokens and $39.88 per million output tokens. A blended 3:1 input-to-output mix works out to about $16.70 per million tokens. Cached input is listed at $0.92 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $8.97 | per 1M tokens |
| Output | $39.88 | per 1M tokens |
| Cached input | $0.92 | per 1M tokens |
| Blended 3:1 | $16.70 | estimate per 1M tokens |
| 1M in + 1M out | $48.85 | 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 | 74.9 | 337 | 44th | |
| GPQA Diamond | 69.0 | 294 | 51th | |
| SWE-bench Verified | 60.9 | 305 | 49th | |
| HumanEval | 76.2 | 325 | 46th | |
| MATH-500 | 74.9 | 328 | 45th | |
| AIME 2025 | 66.0 | 331 | 45th | |
| LiveCodeBench | 66.5 | 262 | 56th | |
| IFEval | 80.6 | 319 | 47th | |
| TruthfulQA | 74.8 | 334 | 44th | |
| HellaSwag | 84.9 | 251 | 58th | |
| MMMU | 71.5 | 255 | 58th | |
| Arena Elo | 1374.2 | 298 | 50th |
What Grok 4 Nano is good for
Grok 4 Nano is a general-purpose model in the index. It handles text generation, summarization and question answering, and it can be a sensible default when you need a balance of quality, price and context. At $8.97 per million input tokens with a 16,384-token window, check its benchmark profile against the specific task before committing.
Strengths
- Accepts more than text, including image input where the provider supports it.
Trade-offs
- Proprietary licence: you cannot download the weights or self-host the model.
- Premium input pricing at $8.97 per million tokens.
- Context window of 16,384 tokens is small for long-document work.
- Average benchmark score is below the index median; test it on your own task.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Mixtral Instruct | Mistral AI | 65536 | $3.35 | 72.9 |
| Grok 4 Nano | xAI | 16384 | $8.97 | 72.7 |
| Llama 3.1 Cerebras Base | Cerebras | 65536 | $3.36 | 72.7 |
| Mistral Small 3 Base | Mistral AI | 16384 | $3.19 | 72.7 |
| Yi-Lightning Base | 01.AI | 16384 | $3.31 | 72.7 |
| Mixtral Chat | Mistral AI | 65536 | $3.30 | 72.6 |
FAQ
How much does Grok 4 Nano cost?
Grok 4 Nano is listed at $8.97 per million input tokens and $39.88 per million output tokens. Cached input is $0.92 per million tokens. A blended 3:1 input-to-output mix is about $16.70 per million tokens.
What is the context window of Grok 4 Nano?
Grok 4 Nano has a context window of 16,384 tokens and can emit up to 16,384 output tokens per request in this index.
Is Grok 4 Nano open weights?
No. Grok 4 Nano is a proprietary model with a proprietary licence, so you cannot download the weights.
How does Grok 4 Nano score on benchmarks?
Grok 4 Nano averages 72.7 across the scored benchmarks in this index, ranking #308 of 600 models. Its strongest relative result is Arena Elo at 1374.2.
What is Grok 4 Nano best for?
Grok 4 Nano is a general-purpose model in the index. It handles text generation, summarization and question answering, and it can be a sensible default when you need a balance of quality, price and context. At $8.97 per million input tokens with a 16,384-token window, check its benchmark profile against the specific task before committing.