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DeepSeek V4 Flash (0731) vs GLM-5.3-Flash

vs

什么时候选哪个

两者都是文本输出的 flash 级模型,具有 1,000,000-token 的上下文窗口,但它们在价格和输入上存在分歧:glm-5.3-flash 的输入成本为 $0.15,输出为 $0.5,比 $0.44 和 $1.32 的 deepseek-v4-flash-0731 大约便宜 2.9x 和 2.6x,并且它在文本之外还接受图像和视频。对于低成本的大批量文本工作或任何多模态任务,请选择 glm-5.3-flash,但需注意其思考模式无法关闭。当你需要极长的单次响应时,请选择 deepseek-v4-flash-0731,因为其 393,216-token 的最大输出大约是 GLM 的 163,840 的 2.4x。

Benchmark 成绩

领先高于同类均值无更高分DeepSeek V4 Flash (0731)010 / 280 / 28GLM-5.3-Flash54 / 61 / 6

5 项两边都有成绩。

DeepSeek V4 Flash (0731) GLM-5.3-Flash 其他参测模型 同类均值 ★ 没有模型得分更高
DeepSWE 1.1
54.4%
63.4%
Cybergym
76.7%
N/A
JobBench
41.3%
N/A
Humanity's Last Exam with tools
51.5%
55.3%
Agents' Last Exam
25.2%
26.3%

供应商公布: Alibaba (Qwen) Anthropic ByteDance DeepSeek Google MiniMax Moonshot OpenAI Tencent Z.ai

价格

DeepSeek V4 Flash (0731) GLM-5.3-Flash Δ
输入 / 1M token $0.44 $0.15 2.9×
输出 / 1M token $1.32 $0.5 2.6×
缓存读取 / 1M token $0.044 $0.03 1.5×
缓存写入 不单独收费 - -

价格取自构建时的实时目录,最新价格见各模型页面。

两个模型所处的位置:全部 79 个按同一单位计费的聊天模型的每 1M token 输入价分布(对数刻度)

能力

DeepSeek V4 Flash (0731) GLM-5.3-Flash
工具调用 是 是
思考控制 是,但供应商未公布调节参数 始终开启
结构化输出 是 是
提示词缓存 隐式(自动) 隐式(自动)
缓存有效期 no fixed TTL (evicted when unused) 未公布
最小缓存前缀 未公布 未公布

规格

DeepSeek V4 Flash (0731) GLM-5.3-Flash
输入模态 文本 文本 图像 视频
输出模态 文本 文本
发布日期 2026-07-31 2026-08-26
上下文窗口 1M 1M
最大输出 393K 164K
思考参数 - reasoning_effort
可选值 -
reasoning_effort
  • low
  • high
  • max
默认值 - max

规格照录自各供应商的文档;供应商没有公布的项目,对应的行直接省略,不做推断。 完整来源: DeepSeek V4 Flash (0731) · GLM-5.3-Flash

同一条提示词,两个模型,经网关实测

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

DeepSeek V4 Flash (0731) 通过 · 3 sentences

Enabling reasoning mode prompts the model to generate extensive internal chain-of-thought tokens before answering, often multiplying total token output per query by several times. This directly inflates costs because we are billed per token, and these reasoning tokens are processed at a premium compute tier that carries a higher price per million tokens. However, this spend buys measurably higher accuracy and fewer failed calls, so we are tracking it against specific error-reduction KPIs to ensure the ROI justifies the increase.

输出 365 tok (+266 思考) 延迟 5.1 s

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,数得出来)、受众适配(对 CFO 说话的口吻),以及下方 token 计数暴露出的隐藏思考计费差额。

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

DeepSeek V4 Flash (0731) 通过 · 8/8 cases

```python def longest_run(xs): if not xs: return 0 best = 1 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 original bug stems from initializing `cur` to 0 and only incrementing it when adjacent elements are equal, which counts the number of *equal transitions* rather than the actual run length—so every run of length L is reported as L−1, and a single‑element run (with no transitions) yields 0. Moreover, because `best` is updated only inside the equality branch, it never accounts for a run that ends at the last element if that run is longer than any previously seen (though the real issue remains the off‑by‑one). […]

输出 1268 tok (+1016 思考) 延迟 14.0 s

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(能运行)、解释的信息密度,以及在一个范围明确的任务上的 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,严格符合 schema

DeepSeek V4 Flash (0731) 通过 · 5/5 fields, guidance null

{ "company": "Meridian Robotics", "quarter": "Q3", "revenue_usd_m": 412, "growth_pct": null, "guidance": null }

输出 1119 tok (+1072 思考) 延迟 12.3 s

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

是否严守 schema(不臆造字段)、能否顶住幻觉压力(原文明说暂不给出 guidance),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

DeepSeek V4 Flash (0731) 未通过 · 141 words, 0 banned, 1 question

**Introducing Prompt Cache for API Gateway** We are pleased to announce Prompt Cache, a new feature that stores and reuses identical prompt prefixes across all connected LLM providers. By automatically recognizing repeated requests, this cache reduces token consumption and lowers latency without altering your application logic. Whether you use OpenAI, Anthropic, or open-source models, the cache operates transparently, ensuring consistent behavior while cutting costs. Developers can configure cache TTL and scoping rules via a simple API call, giving you precise control over data freshness and privacy. This feature also minimizes redundant upstream calls, freeing provider rate limits for more critical workloads. Start caching today through the dashboard or CLI, and watch your operational expenses drop significantly. […]

输出 254 tok (+80 思考) 延迟 4.4 s

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

是否守住约束(字数预算、禁用词表、只能有一个问句)、文风特征,以及长度控制。

改一行代码就能在两个模型之间切换

下方每个标签页里都有两个模型 ID,高亮的那两行是唯一要改的地方。端点不变,API key 不变,请求结构也不变。

from openai import OpenAI

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

resp = client.chat.completions.create(
    model="deepseek-v4-flash-0731",
    # model="glm-5.3-flash",  # 取消注释此行,注释上一行
    messages=[{"role": "user", "content": "Summarize this diff"}],
    reasoning_effort="medium",
)
print(resp.choices[0].message.content)

获取 API key →

常见问题

DeepSeek V4 Flash (0731) 和 GLM-5.3-Flash 哪个更便宜?

按「输入 / 1M token」算,GLM-5.3-Flash 更便宜($0.15 对 $0.44,相差 2.9×)。其他计费项的结论可能相反,完整价格见上方表格,实际成本取决于你的用量构成。

不用分别集成两次,就能对 DeepSeek V4 Flash (0731) 和 GLM-5.3-Flash 做 A/B 测试吗?

可以。两个模型走同一个 OpenAI 兼容端点,用同一个 API key,切换时只要改一行里的模型名,所以可以给两个模型各分一部分流量,直接对比账单。

DeepSeek V4 Flash (0731) 和 GLM-5.3-Flash 支持提示词缓存吗?

支持。两个模型的缓存读取价都低于各自的输入价,所以前缀能反复命中缓存的负载,实际成本会比按官网价估算的低。具体的缓存读取价见上方价格表。

相关对比

我们的实测研究