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Claude Sonnet 5 vs DeepSeek V4 Pro

vs

什么时候选哪个

两者共享 1,000,000 token 上下文窗口,都覆盖聊天、代码、推理和工具,所以差别在模态和成本:claude-sonnet-5 在文本之外接受图像输入并暴露思考能力,而 deepseek-v4-pro 只处理文本,但允许最多 393216 输出 token,对 Sonnet 的 128000。在价目表上 deepseek-v4-pro 全面更便宜——输入 $1.32 对 $2,输出 $3.96 对 $10(约便宜 2.5 倍),缓存读取 $0.132 对 $0.2。需要图像或可切换思考时选 claude-sonnet-5;要以更低开销做长文本生成选 deepseek-v4-pro。

Benchmark 成绩

高于同类均值无更高分Claude Sonnet 54 / 221 / 22DeepSeek V4 Pro5 / 100 / 10
Claude Sonnet 5 DeepSeek V4 Pro 其他参测模型 同类均值 ★ 没有模型得分更高
SWE-Bench Pro
N/A
59%
BioMysteryBench hard
34.1%
N/A
OSWorld 2.0 Partial score, batch tool enabled
42.6%
N/A
Finance Agent v2
53.9%
N/A
Harvey Lab-AA
90.1%
N/A
Humanity's Last Exam no tools
N/A
37.7%
AutomationBench
10.7%
N/A
LVBench
68.5%
N/A

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

价格

Claude Sonnet 5 DeepSeek V4 Pro Δ
输入 / 1M token $2 $1.32 1.5×
输出 / 1M token $10 $3.96 2.5×
缓存读取 / 1M token $0.2 $0.132 1.5×
缓存写入 1.25x (5m) / 2x (1h) 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 76 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

Claude Sonnet 5 DeepSeek V4 Pro
工具调用 是 是
思考控制 可配置 可配置
结构化输出 是 是
提示词缓存 显式(由你标记前缀) 隐式(自动)
缓存有效期 5m default, 1h option no fixed TTL (evicted when unused)
最小缓存前缀 1024 个 token 未公布

规格

Claude Sonnet 5 DeepSeek V4 Pro
输入模态 文本 图像 文本
输出模态 文本 文本
发布日期 2026-06-30 2026-04-24
知识截止日期 2026-01 -
上下文窗口 1M 1M
最大输出 128K 393K
思考参数
  • thinking.type "adaptive"
  • output_config.effort
  • thinking.type
  • reasoning_effort
可选值
thinking.type
  • adaptive
  • disabled
effort
  • low
  • medium
  • high
  • xhigh
  • max

"enabled" returns 400

thinking.type
  • enabled
  • disabled
reasoning_effort
  • high
  • max (low and medium map to high, xhigh maps to max)
默认值

thinking on (adaptive)

effort
  • high

enabled, with reasoning_effort high

some complex agent requests are automatically set to 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: Claude Sonnet 5 · DeepSeek V4 Pro

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

Claude Sonnet 5 通过 · 3 sentences

Reasoning mode works by having the model generate extended internal "thinking" steps before producing its final answer, and since we're billed on total tokens, that hidden reasoning text adds significantly to what we pay for—even though you never see it in the output. This is different from simply getting longer visible responses; the model is essentially "showing its work" behind the scenes, and complex prompts can trigger thousands of extra reasoning tokens per request. The upside is improved accuracy on complex tasks, but if we want to control costs, we should selectively enable reasoning only for queries that truly need it, rather than applying it universally.

输出 194 tok 延迟 4.3 s

DeepSeek V4 Pro 通过 · 3 sentences

Enabling reasoning causes the model to generate a lengthy internal chain‑of‑thought before it delivers a visible answer, and we are billed for every one of those hidden reasoning tokens just as we are for the final output. In most interactions, the volume of these unseen tokens at least equals the visible response, effectively doubling the total tokens consumed per query. That doubled token consumption translates directly into a doubled per‑query cost, which is why our overall LLM bill doubled.

输出 641 tok (+545 思考) 延迟 11.5 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

Claude Sonnet 5 通过 · 8/8 cases

## The Bug The function has two related off-by-one issues rooted in the same cause: `cur` and `best` are initialized to `0` instead of `1`, treating run lengths as the number of *matches* between adjacent elements rather than the number of *elements* in the run. This means a single-element input never enters the loop (since `range(1, 1)` is empty) and returns `0` instead of the correct answer of `1`. It also means that for any input, the run length is undercounted by exactly one — a run of 3 equal elements only produces 2 "match" increments, so `best` ends up as 2 instead of 3. The claim that it "misses runs that end at the last index" is actually a symptom of this same undercount: the logic does update `best` correctly on every iteration (including the last), but because it's counting matches instead of elements, the final reported value is always one less than the true longest run. […]

输出 536 tok 延迟 7.1 s

DeepSeek V4 Pro 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 ``` **Explanation:** The bug stems from initializing `cur = 0` and only incrementing it when two adjacent elements match, which counts the number of *additional* equal elements rather than the actual run length (which is `cur + 1`). As a result, the returned `best` is always one less than the true longest run—most obviously returning 0 for a single-element list instead of 1. […]

输出 2418 tok (+2131 思考) 延迟 35.6 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

Claude Sonnet 5 通过 · 5/5 fields, guidance null

```json { "company": "Meridian Robotics", "quarter": "Q3", "revenue_usd_m": 412, "growth_pct": 11.5, "guidance": null } ```

输出 348 tok 延迟 5.3 s

DeepSeek V4 Pro 通过 · 5/5 fields, guidance null

{ "company": "Meridian Robotics", "quarter": "September quarter", "revenue_usd_m": 412, "growth_pct": "eleven and change", "guidance": null }

输出 1204 tok (+1153 思考) 延迟 19.9 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

Claude Sonnet 5 通过 · 123 words, 0 banned, 1 question

## Introducing Cross-Provider Prompt Caching We're rolling out a new caching layer for our API gateway that works across every major LLM provider you connect through it. Instead of resending identical prompts and paying full price each time, the gateway recognizes repeated requests and serves cached responses in milliseconds—regardless of whether you're routing to OpenAI, Anthropic, or Google. What does this mean for your bill and your latency? Both drop, often significantly, especially for teams running high-volume, repetitive workloads like customer support bots or batch content generation. The cache is configurable per route, with adjustable TTLs and invalidation rules, so you stay in control of freshness versus cost. Available now for all Pro and Enterprise plans. Check your dashboard to enable it today.

输出 259 tok 延迟 4.8 s

DeepSeek V4 Pro 没有可供评分的回答 · no answer text within 16,384 tokens (all of it went to thinking)

模型没有返回回答文本,整个 token 预算都花在了隐藏的思考上。

输出 8193 tok (+8192 思考) 延迟 106.2 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="claude-sonnet-5",
    # model="deepseek-v4-pro",  # 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

Claude Sonnet 5 和 DeepSeek V4 Pro 哪个更便宜?

按「输入 / 1M token」算,DeepSeek V4 Pro 更便宜($1.32 对 $2,相差 1.5×)。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 Claude Sonnet 5 和 DeepSeek V4 Pro 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。

Claude Sonnet 5 和 DeepSeek V4 Pro 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