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Claude Sonnet 5.5 vs Kimi K2.7 Code

vs

何時用哪一個

當任務需要空間時請選擇 claude-sonnet-5-5:其 1000000-token 上下文與 128000-token 最大輸出,使 kimi-k2.7-code 的 256000 與 32768 相形見絀,並且它在對話、程式碼、工具和推理之上還具備明確的思考能力。若要降低大流量文字與程式碼任務的成本,請選擇 kimi-k2.7-code:其輸入 $0.95 與輸出 $4 的價格,在輸入上比 $2/$10 的 Sonnet 大約便宜 2.1x,在輸出上便宜 2.5x,且具有幾乎相同的快取讀取價格($0.19 對 $0.2),同時它也是兩者中唯一在文字與圖片之外接受影片輸入的模型。

Benchmark 成績

Claude Sonnet 5.5:廠商沒有公布過 benchmark 成績。

高於同儕均值Kimi K2.7 Code1 / 5
Claude Sonnet 5.5 Kimi K2.7 Code 其他被測模型 同儕均值 ★ 無人分數更高
MLS-Bench-Lite
N/A
35.1%
MCP-Atlas
N/A
76%

廠商公布: Alibaba (Qwen) Moonshot OpenAI Z.ai

定價

Claude Sonnet 5.5 Kimi K2.7 Code Δ
輸入 / 1M tokens $2 $0.95 2.1×
輸出 / 1M tokens $10 $4 2.5×
快取讀取 / 1M tokens $0.2 $0.19 1.1×
快取寫入 1.25x (5m) / 2x (1h) - -

費率取自建置時的即時目錄;各模型頁面皆附有目前的費率卡。

它們的相對位置 — 在此計費單位下,所有 76 個 聊天 模型的 每 1M tokens 的輸入價格(對數尺度)

能力

Claude Sonnet 5.5 Kimi K2.7 Code
工具使用 是 是
思考控制 常駐開啟 常駐開啟
結構化輸出 是 -
提示快取 顯式(由您標記前綴) 隱式(自動)
快取生命週期 5m default, 1h option 未公開
最小快取前綴 1024 個 token 未公開

規格

Claude Sonnet 5.5 Kimi K2.7 Code
輸入模態 文字 影像 文字 影像 影片
輸出模態 文字 文字
發布日期 2026-09-28 2026-06
知識截止日期 2026-06 -
上下文視窗 1M 256K
最大輸出 128K 33K
思考參數 thinking.type
  • thinking.type
  • thinking.keep
可接受的值
thinking.type
  • adaptive (default)
  • between_tools
type
  • accepts only enabled
keep
  • accepts only all
預設值 adaptive, effort high thinking on with Preserved Thinking on

規格摘錄自各供應商的文件;供應商未發布的資料列會直接省略,而非自行推測。 完整來源: Claude Sonnet 5.5 · Kimi K2.7 Code

單一提示詞,兩款模型 — 經由閘道測量

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

Claude Sonnet 5.5 通過 · 3 sentences

Enabling reasoning makes the model "think" before it answers, and that internal thinking is generated as extra text (reasoning tokens) that we are billed for at the same rate as output tokens, even though users never see it. Output tokens also cost several times more than input tokens, so a single request that used to produce a short answer can now generate many times more billable text behind the scenes. Because our request volume and prompts didn't change, the doubling comes almost entirely from this hidden thinking, and we can bring it down by limiting reasoning effort, turning it off for simple tasks, and reserving it for the workloads where the accuracy gain justifies the cost.

輸出 205 tok 延遲 3.6 s

Kimi K2.7 Code 通過 · 3 sentences

Enabling reasoning mode causes the model to generate an internal chain-of-thought before producing each answer, and that hidden reasoning text is billed like any other output. Those extra reasoning tokens typically add up to much more than the final response itself, so every API call now costs significantly more than before. Because our overall usage volume did not change, the doubled bill reflects that each query consumes roughly twice as many billable tokens.

輸出 259 tok (+174 思考) 延遲 5.4 s

指令遵循(恰好三句,可數)、受眾適配(面向 CFO 的語氣),以及下方 token 計量所暴露的隱藏思考計費缺口。

提示詞 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. 檢查 修復通過測試

Claude Sonnet 5.5 通過 · 8/8 cases

**The bug:** `cur` counts the number of *adjacent equal pairs* rather than the number of items in the run. A run of length k contains only k−1 such pairs, so every result is one too small. The counter also starts at 0 and the loop starts at index 1, so a single-element list never updates `best` and returns 0 instead of 1. (An empty list should return 0.) In addition, `cur` resets to 0 on a mismatch, when it should reset to 1, because the item at `xs[i]` begins a new run of length 1. The claim that it "misses runs ending at the last index" is really the same off-by-one: the final run is counted, but as one less than its true length. Because `best` is updated inside the loop on every extension, the last run isn't skipped. […]

輸出 444 tok 延遲 6.7 s

Kimi K2.7 Code 通過 · 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 bug is that the function counts *transitions* between equal neighbors instead of counting the items themselves, so a single-element list never enters the loop and returns `0` instead of `1`. Likewise, resetting `cur` to `0` on a mismatch forgets the current item that starts a new run, which causes runs that end at the last index to be undercounted. Initializing both `best` and `cur` to `1` and resetting `cur` to `1` fixes both issues.

輸出 410 tok (+222 思考) 延遲 9.4 s

修復是否真的正確(可執行)、解釋的資訊密度,以及在一個邊界明確的任務上的 token 效率。

提示詞 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. 檢查 合法 JSON,schema 精確

Claude Sonnet 5.5 通過 · 5/5 fields, guidance null

Here is the extracted JSON: ```json { "company": "Meridian Robotics", "quarter": "September quarter", "revenue_usd_m": 412, "growth_pct": 11, "guidance": null } ``` Notes on the choices: - **quarter**: The text says "September quarter" without specifying a fiscal year or Q-number, so I kept the wording as stated. - **revenue_usd_m**: The text gives "412" for the topline, with no currency or unit stated explicitly. I've taken it as 412 million USD per the field definition, but the text does not confirm that, and the figure is constant-currency. - **growth_pct**: "Eleven and change" means slightly above 11, so 11 is an approximation. The exact figure isn't given. - **guidance**: Guidance is withheld pending the Q4 close, so no guidance is stated, hence null.

輸出 300 tok 延遲 3.5 s

Kimi K2.7 Code 通過 · 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" } ```

輸出 721 tok (+663 思考) 延遲 13.2 s

schema 服從度(不臆造欄位)、幻覺壓力(guidance 明確被暫緩給出),以及結構化輸出路徑的差異。

提示詞 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. 檢查 120 詞,0 個禁用詞

Claude Sonnet 5.5 通過 · 122 words, 0 banned, 1 question

**Introducing Cross-Provider Prompt Caching** Your API gateway now caches prompts across every connected LLM provider, whether you route traffic to OpenAI, Anthropic, Google, or a self-hosted model. Here's how it works: the gateway fingerprints each prompt prefix, stores it centrally, and applies the right provider-specific caching mechanism automatically. When you switch providers or fail over during an outage, your cached context follows you. Early testing shows input token costs dropping by up to 70% on repeated system prompts and long documents, with latency improvements of 40% or more on cache hits. Tired of paying to send the same instructions thousands of times a day? Enable it with one configuration flag. Cache rules, TTLs, and per-team isolation are available in the dashboard today.

輸出 266 tok 延遲 3.8 s

Kimi K2.7 Code 通過 · 120 words, 0 banned, 1 question

We're introducing Prompt Cache for our API Gateway, a new capability that stores prompt responses across multiple AI providers. By caching replies, you reduce redundant calls, lower latency, and cut costs without changing how you build. Teams using several model providers can now reuse identical prompt results instantly, keeping traffic consistent and budgets predictable. Responses are keyed by provider, model, and exact prompt, so you always get the right result. Configure TTL, hit thresholds, and eviction rules from a single dashboard. It fits into your existing routing and requires no code changes. Setup takes minutes and works with your current endpoints. Want to see how much latency and spend you can trim? Check the docs to enable Prompt Cache today.

輸出 2375 tok (+2235 思考) 延遲 38.6 s

約束服從度(字數預算、禁用詞表、唯一的那句問句)、文風指紋,以及長度控制。

只需一行程式碼即可在兩者間切換

以下每個頁籤中都有這兩個 ID — 醒目提示的這兩行是唯一的修改處。相同的端點,相同的金鑰,相同的請求結構。

from openai import OpenAI

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

resp = client.chat.completions.create(
    model="claude-sonnet-5-5",
    # model="kimi-k2.7-code",  # 取消註解此行,並註解上一行
    messages=[{"role": "user", "content": "Summarize this diff"}],
    reasoning_effort="medium",
)
print(resp.choices[0].message.content)

取得 API 金鑰 →

常見問題

Claude Sonnet 5.5 和 Kimi K2.7 Code 哪個比較便宜?

Kimi K2.7 Code 在 輸入 / 1m tokens 上較便宜($0.95 對比 $2,相差 2.1×)。其他項目可能呈現相反結果 — 上表提供完整資訊,實際成本取決於您的使用組合。

我可以在不進行兩次整合的情況下,對 Claude Sonnet 5.5 和 Kimi K2.7 Code 進行 A/B 測試嗎?

可以。兩者皆透過同一個相容 OpenAI 的端點提供服務,並使用同一把 API 金鑰 — 切換只需更改一行的模型字串,因此您可以將部分流量分別導向兩者並直接比較帳單。

Claude Sonnet 5.5 與 Kimi K2.7 Code 支援提示快取嗎?

是的 — 兩者的快取讀取費率皆低於其輸入費率,因此具有暖前綴的工作負載成本會低於牌價所示。確切的快取讀取列請見上方的定價表。

相關比較