grok-3-fast-betaCompare grok-3-fast-beta API pricing, supported endpoints, capabilities and access options on Modelsell.
Grok tokenizer (BPE)Scores on standardized evaluations. Higher percentages are better — and rank percentile shows
Metrics sourced fromArtificial Analysis 2026-09-30·Grok 3 Fast Beta
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Grok 3 Fast Beta 可以解释技术概念、分析文字材料、编写代码草案,也能在多轮交流中调整答案的细节。它适合嵌入知识问答、开发辅助和写作流程:先得到一份可以检查的初稿,再针对缺失条件、表达方式或代码边界继续追问。
处理表格数据时,可以把列名、几行脱敏样例和目标结果一起提供,让它设计清洗步骤、解释公式,或写出处理脚本。处理文字时,则可以要求它保留原文事实,将说明改成客服回复、操作指引或不同长度的摘要。明确哪些内容必须保留,比只说“优化一下”更容易得到可用结果。
先说明语言与运行环境,再给出输入、预期输出和异常样例。可以让模型先解释问题出现的条件,再给出尽量小的修改,最后列出需要运行的测试。生成脚本后,仍需在自己的环境中执行并检查结果;对话中的运行推测不能代替实际测试。
保留已经确认的需求、关键材料和最新结论即可。例如修改数据清洗规则后,应明确旧规则已被替换,避免两套条件同时影响后续答案。涉及近期信息时,提供带日期的资料,让回答有可以核查的依据。
grok-3-fast-beta 是 Grok 3 的历史别名。需要比较实际交互体验时,可用同一组请求观察首字响应和完整结果,结合当前渠道的实际表现选择。
例如要处理订单 CSV,可以输入:
“请用 Python 编写订单清洗函数。列为 order_id、amount、created_at;order_id 重复时保留最新一行,amount 为空时记录为错误,不要自动填零。先解释处理顺序,再给函数和三组测试数据。样例:{脱敏数据}。”
先检查它对重复订单与空值的解释,再要求补充日期格式错误、负数金额等边界情况。把实际执行得到的报错和最小输入回传,继续修正。若用于实时对话,可限制首轮输出长度,把详细说明放到后续追问中,避免一开始就返回过长内容。
/v1/chat/completions| Parameter | Type | Default / range | Description |
|---|---|---|---|
temperature | number | = 10 ~ 2 | Sampling temperature; lower is more deterministic |
top_p | number | = 10 ~ 1 | Nucleus sampling probability mass |
max_tokens | integer | >= 1 | Maximum number of tokens in the response |
frequency_penalty | number | = 0-2 ~ 2 | Penalises repetition of frequent tokens |
presence_penalty | number | = 0-2 ~ 2 | Encourages introducing new topics |
stop | array | — | Up to 4 strings that stop generation |
seed | integer | — | Deterministic sampling seed (best-effort) |
n | integer | = 1>= 1 | Number of completions to generate |
stream | boolean | = false | Stream tokens via Server-Sent Events |
response_format | object | — | Force JSON object or schema-conforming output |
tools | array | — | Tool / function declarations the model may call |
tool_choice | string | autononerequired | Tool-choice policy or specific tool name |
logprobs | boolean | = false | Return per-token log probabilities |
top_logprobs | integer | 0 ~ 20 | Number of top log probabilities returned per token |
logit_bias | object | — | Per-token logit bias map |
user | string | — | End-user identifier for abuse monitoring |
Replace <YOUR_API_KEY> with the API key from your token settings.
All requests must include Authorization: Bearer <TOKEN> header. Anthropic-formatted endpoints accept the x-api-key header instead.
Generate tokens from the Tokens page; you can scope them to specific models, groups, IPs, and rate-limits.
| Parameter | Type | Default / range | Description |
|---|---|---|---|
temperature | number | = 10 ~ 2 | Sampling temperature; lower is more deterministic |
top_p | number | = 10 ~ 1 | Nucleus sampling probability mass |
max_tokens | integer | >= 1 | Maximum number of tokens in the response |
frequency_penalty | number | = 0-2 ~ 2 | Penalises repetition of frequent tokens |
presence_penalty | number | = 0-2 ~ 2 | Encourages introducing new topics |
stop | array | — | Up to 4 strings that stop generation |
seed | integer | — | Deterministic sampling seed (best-effort) |
n | integer | = 1>= 1 | Number of completions to generate |
stream | boolean | = false | Stream tokens via Server-Sent Events |
response_format | object | — | Force JSON object or schema-conforming output |
tools | array | — | Tool / function declarations the model may call |
tool_choice | string | autononerequired | Tool-choice policy or specific tool name |
logprobs | boolean | = false | Return per-token log probabilities |
top_logprobs | integer | 0 ~ 20 | Number of top log probabilities returned per token |
logit_bias | object | — | Per-token logit bias map |
user | string | — | End-user identifier for abuse monitoring |
| Supplier | RPM | TPM | RPD |
|---|---|---|---|
| xAI | Unlimited | Unlimited | Unlimited |
No restriction
Compare grok-3-fast-beta API pricing, supported endpoints, capabilities and access options on Modelsell.
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