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GLM-5.3-Flash

chat代码推理图像理解工具调用提示词缓存

GLM-5.3-Flash 是 GLM-5.3 产品线中原生多模态的一员,面向高效编码与长程智能体任务。

输入
文本 图像 视频 $0.15/M
输出
文本 $0.5/M
缓存读取
$0.03/M
上下文
1M
对比 GPT-4o
便宜约 97%

Benchmark 成绩

高于同侪均值无人分数更高5 / 61 / 6
GLM-5.3-Flash 其他被测模型 同侪均值 无人分数更高
Terminal-Bench 2.1
84.3%
GDPval-AA v2 Elo · 1504-1773 据 Z.ai 公布 · 2026-09-04
无人分数更高 1773
Humanity's Last Exam with tools
55.3%
Agents' Last Exam
26.3%

厂商公布: Alibaba (Qwen) Anthropic DeepSeek Google Moonshot OpenAI Tencent Z.ai

价格在同类中的位置

价格在 65 个同类模型中的位置

输入$0.15/M
$0.05 · Qwen3 VL Flash GPT-5.4 Pro · $30
输出$0.5/M
$0.275 · DeepSeek V4 Flash GPT-5.4 Pro · $180
缓存读取$0.03/M
$0.0028 · DeepSeek V4 Flash GPT-5.4 Pro · $15

这条线显示该模型的价格,在 Synthorai 上同类模型里处于什么位置。两端标出了最便宜和最贵的那个。这里是基础价,批量、区域和缓存写入的折扣见价格页。

规格与限制

Token

上下文窗口(厂商规格) 1,000,000
最大输出(厂商规格) 163,840

提示词缓存

缓存方式 自动

思考

厂商参数 reasoning_effort
可选值 low · high · max
默认值 max 请求未指定时生效
可关闭 不支持
思考行为 Same dial as GLM-5.3 with no documented way to switch thinking off; clear_thinking defaults to false.
参数 reasoning_effort
取值 minimal · low · medium · high 网关侧参数面——以上方厂商映射为准

模型

模态 文本 + 图像 + 视频 → 文本
参数量 总参数 320B · 激活 18B MoE (hybrid sparse + linear attention, mHC)
  • Natively multimodal member of the GLM-5.3 line, taking image and video alongside text
  • the hybrid sparse-plus-linear attention architecture is credited with holding accurate long-context behaviour while cutting compute overhead

依据 Z.ai 官方文档 ↗

单个 Prompt —— 通过网关实测

提示词 Explain to a CFO, in exactly three sentences, why our LLM bill doubled after we enabled reasoning. 检查 恰好 3 句

GLM-5.3-Flash 通过 · 3 sentences

Enabling reasoning means the model now generates thousands of invisible "thinking" tokens before each visible answer, and we're billed for those hidden tokens at full output rates—our most expensive tier. Since output tokens cost 3–5x more than input tokens, that hidden thinking volume compounds across every request, which is why the bill doubled rather than edged up. If the spend concerns you, the fix is straightforward: route only complex queries to reasoning models and keep simple tasks on standard ones, which can reclaim a meaningful share of that cost without losing accuracy where it matters.

输出 742 tok (+626 思考) 延迟 23.2 s

指令遵循(恰好三句,可数)、受众适配(面向 CFO 的语气),以及下方 token 计量所暴露的隐藏思考计费缺口。

提示词 This function is supposed to return the longest run of consecutive equal items, but callers report it is off by one on single-element inputs and misses runs that end at the last index. Fix it and explain the bug in one paragraph. 检查 修复通过测试

GLM-5.3-Flash 通过 · 8/8 cases

```python def longest_run(xs): if not xs: return 0 best = cur = 1 for i in range(1, len(xs)): if xs[i] == xs[i - 1]: cur += 1 best = max(best, cur) else: cur = 1 return best ``` **The bug:** `cur` is supposed to hold the length of the current run, but it's seeded with `0` and reset to `0` on a mismatch instead of `1` — and since the loop starts at index 1, the first element of every run never passes through the `==` branch and so never gets counted at all. That means `cur` actually holds *run length minus 1* for every run, so every run is underreported by one: a single-element input never enters the loop and returns 0 instead of 1, and a run of length n returns n − 1 (e.g., `[3, 3, 3]` returns 2). […]

输出 2462 tok (+2138 思考) 延迟 29.1 s

修复是否真的正确(可运行)、解释的信息密度,以及在一个边界明确的任务上的 token 效率。

提示词 Extract a JSON object with fields {company, quarter, revenue_usd_m, growth_pct, guidance} from this text. Use null for anything not stated; add no other fields. 检查 合法 JSON,schema 精确

GLM-5.3-Flash 通过 · 5/5 fields, guidance "Withheld pending the Q4 close"

```json { "company": "Meridian Robotics", "quarter": "September quarter", "revenue_usd_m": 412, "growth_pct": 11, "guidance": "Withheld pending the Q4 close" } ``` Notes on judgment calls: revenue of 412 is on a constant-currency basis as stated; growth of "eleven and change" is approximated as 11 since no precise figure is given.

输出 717 tok (+616 思考) 延迟 9.1 s

schema 服从度(不臆造字段)、幻觉压力(guidance 明确被暂缓给出),以及结构化输出路径的差异。

提示词 Write a 120-word product announcement for an API gateway feature that caches prompts across providers. Forbidden words: "seamless", "unlock", "game-changer", "revolutionize", "empower". Exactly one sentence must be a question. 检查 120 词,0 个禁用词

GLM-5.3-Flash 通过 · 120 words, 0 banned, 1 question

Introducing Cross-Provider Prompt Cache, the newest feature in our API gateway. Today, teams send identical prompts to multiple LLM providers and pay full price each time. Why duplicate that work and cost? With Cross-Provider Prompt Cache, your gateway stores prompt-response pairs and serves repeated requests from cache, regardless of which provider handles the call. The result: lower latency, reduced spend, and consistent outputs across OpenAI, Anthropic, Google, and self-hosted models. Configure cache policies per route, set TTLs, and invalidate entries instantly through the dashboard or API. Built-in analytics show hit rates and savings in real time. Enable the cache with a single flag, no code changes required. Available today on all paid plans. Contact sales for enterprise volume pricing details.

输出 2095 tok (+1937 思考) 延迟 20.2 s

约束服从度(字数预算、禁用词表、唯一的那句问句)、文风指纹,以及长度控制。

30 秒用上 GLM-5.3-Flash

OpenAI 兼容:换掉 base_url,SDK 不用改。POST /v1/chat/completions

from openai import OpenAI

client = OpenAI(
    base_url="https://synthorai.io/v1",
    api_key="sk-syn-...",
)

resp = client.chat.completions.create(
    model="glm-5.3-flash",
    messages=[{"role": "user", "content": "Summarize this diff"}],
    reasoning_effort="medium",
)
print(resp.choices[0].message.content)

关于 GLM-5.3-Flash

  • 它在文本之外还接受图像与视频输入并返回文本,其混合架构——稀疏注意力结合线性注意力,并引入流形约束超连接(mHC)——被描述为在削减算力开销的同时保持准确的长上下文行为。
  • 效率体现在模型形态上:总参数 320B、激活仅 18B,而 GLM-5.3 为 753B。
  • 这正是它成为低价档的原因;同时值得说清楚它没有被牺牲掉什么——它同样以 1M token 上下文窗口提供服务,而非更小的窗口。
  • 思考与 GLM-5.3 一致:reasoning_effort 取 low、high 或 max,默认 max,且没有公开的关闭方式,因此输出预算要为每次调用的推理轨迹留出空间。
  • 工具调用、JSON 与结构化输出、流式返回和缓存输入均受支持,权重公开发布。
  • 在 Synthorai 上它通过 OpenAI 兼容的 chat completions 端点提供。

常见问题

GLM-5.3-Flash API 可以免费试用吗?

可以。新账号可获得 10 次试用调用和最高 $1 的免费额度,无需绑卡。按输入 $0.15/M 计算,仅这笔额度就足够对 GLM-5.3-Flash 发起约 833 次 ~8K token 的请求。

GLM-5.3-Flash 最擅长什么?

原生多模态,支持图像与视频输入、总参数 320B,激活仅 18B、低价档同样提供 1M token 窗口。完整能力请见「关于」部分,内容取自厂商官方发布说明。

GLM-5.3-Flash 的价格是多少?

在 Synthorai 上,GLM-5.3-Flash 输入 $0.15/百万 token、输出 $0.5/百万 token,即厂商牌价,无平台加价。缓存命中的输入 token 按 $0.03/M 计费。

GLM-5.3-Flash 支持提示词缓存(prompt caching)吗?

支持,且全自动:经 Z.ai 提供的提示词自动缓存,无需改代码。缓存命中的输入 token 按 $0.03/M 计费(未命中 $0.15/M)。 提示词缓存指南 →

如何开通 GLM-5.3-Flash?

把现有 OpenAI SDK 的 base_url 指向 "https://synthorai.io/v1",model 设为 "glm-5.3-flash" 即可。一把 API key 通用网关上的全部模型。

相关模型

对比

本页每个值都转录自厂商自己的文档(链接见上),并带有核对日期。价格在全目录范围内比较;各厂商定义不同的规格值,只说明差异而不作图表对比。此处没有任何由我们测量的数据,也不做评分。

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