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claude-sonnet-5-5 API

claude-sonnet-5-5

claude-sonnet-5-5 is available through APINEED. Compare current prices and use the request examples on this page to get started.

Use the backend model ID claude-sonnet-5-5 when sending requests. Availability and performance are shown only when the public metrics APIs return recent data.

MODALITIES
CONTEXTN/A

Playground

Try this text model for free. No sign-in required.

Open Playground

Chat with claude-sonnet-5-5 model

31 / 12,000

APINEED pricing

Pay as you go. Current selling prices in USD.

Get API Key

Input

-50%
$1.00
Model base price $2.00/ 1M tokens

Output

-50%
$5.00
Model base price $10.00/ 1M tokens

Cache read

-50%
$0.05
Model base price $0.10/ 1M tokens

Cache write

-50%
$1.25
Model base price $2.50/ 1M tokens

Cache write · 1 hour

-50%
$2.00
Model base price $4.00/ 1M tokens

50% off. Compared with the model base price configured in the catalog. Crossed-out amounts use the same units and conditions as the selling prices.

Benchmarks

Editorial benchmark data is shown when this model has a verified match.Intelligence uses the source’s median-score ranking. Efficiency views are APINEED calculations, not official LLM2014 rankings. Test costs and reference prices are converted at ¥7 per US dollar; they are not APINEED selling prices. Missing values are N/A. These results describe the source’s tested configurations, not guaranteed APINEED endpoint performance.

1stGPT-5.5 (xhigh)80.2373.897.9%534s33,219$27.51$29.57
2ndGPT-5.6 Sol (xhigh)78.3769.4211.42%381s17,769$14.71$29.57
3rdKimi-K3 (max)75.7767.6610.7%1144s41,432$17.40$15.00
4thClaude Opus 5 (xhigh)71.2464.749.12%437s26,705$18.43$24.64
5thGLM-5.3 (max)74.4863.9114.19%1009s57,408$6.43$4.00
6thGLM-5.3-Flash (max)69.5560.5212.98%863s38,787$0.22$0.20
7thQwen3.8-Max (xhigh)64.6860.057.16%1297s65,135$9.38$5.14
8thDeepSeek V4 Pro 0813(max)70.1359.6314.97%1601s73,350$7.92$3.86
9thDeepSeek-V4-Flash-Vision-Exp (max)62.8658.107.57%974s79,420$2.86$1.29
10thGemini 3.7 Flash (high)66.6257.5613.6%131s26,596$2.75$3.70
11thGrok 4.6 (high)67.9356.4116.96%813s33,807$5.60$5.91
12thGemini 3.1 Pro (high)69.3555.8419.48%235s28,338$9.39$11.83
13thDeepSeek V4 Flash 0731 (max)66.3455.2316.75%881s74,657$2.69$1.29
14thGLM-5.2 (max)66.5354.7017.78%891s46,273$5.18$4.00
15thQwen3.8-Flash (xhigh)65.4454.4916.73%844s64,942$0.70$0.39
16thGPT-5.6 Luna (xhigh)65.9251.6221.69%247s37,885$1.25$1.18
17thQwen3.8-27B (xhigh)58.4847.6518.52%2318s73,987$3.55$1.71
18thDoubao-Seed-2.1-pro (high)55.1245.7816.94%2026s85,238$10.23$4.29
19thMuse Spark 1.2 (xhigh)57.9345.1422.08%359s47,209$5.54$4.19
20thGemini 3.7 Flash (low)53.5044.0617.64%59s10,673$1.10$3.70
21stClaude Sonnet 5 (xhigh)47.8039.5717.22%545s45,066$12.44$9.86
22ndTencent Hy3 (high)57.8939.5131.75%1076s53,214$0.85$0.57
23rdQwen3.7-Plus (high)51.3638.7424.57%1254s58,610$1.88$1.14
24thMiniMax-M343.8337.3714.74%982s57,486$1.93$1.20
25thDoubao-Seed-2.0-lite 0428 (high)34.1326.1823.29%669s27,845$0.40$0.51
26thClaude Opus 534.9424.5829.65%156s10,261$7.08$24.64
27thGemini 3.5 Flash Lite (high)29.5120.4430.74%192s17,842$1.23$2.46
28thLing-3.0-flash28.3717.0539.9%735s95,538N/AN/A
29thGemma 4 31B21.3616.0924.67%756s15,290$0.17$0.39
30thopenPangu-2.0-Pro20.0215.7521.33%645s28,215$1.64$2.07
31stQwen3.7-Plus20.8415.6325%323s8,910$0.29$1.14
32ndGPT-5.5 Instant21.7314.0935.16%28s1,712$1.42$29.57
33rdMistral Medium 3.517.2513.8719.59%200s28,129$5.82$7.39
34thStep-3.7-Flash26.1813.7447.52%282s47,180$1.53$1.16
35thMiMo-V2.5-Pro26.3113.0050.59%550s33,095$0.79$0.86
36thDots3-Note Preview18.6312.9530.49%210s28,386N/AN/A
37thERNIE 5.116.3211.3230.64%468s24,522$1.77$2.57
38thQwen3.8-27B16.4810.6135.62%192s8,914$0.43$1.71
39thopenPangu-2.0-Flash19.2410.1647.19%583s29,052$0.19$0.23
40thLongCat-2.017.619.7444.69%374s14,273$0.46$1.14
41stClaude Sonnet 516.499.6741.36%113s6,175$1.70$9.86
42ndGLM-5.212.428.0535.19%24s929$0.10$4.00
43rdDeepSeek V4 Flash 073113.577.9341.56%53s4,621$0.17$1.29
44thGemini 3.1 Flash Lite9.017.1121.09%11s707$0.03$1.48
45thDoubao-Seed-2.1-pro13.036.1752.65%319s6,948$0.83$4.29
46thMistral Medium 3.58.455.9329.82%18s2,589$0.54$7.39

Quick Start

Use /v1/messages with non-streaming output.

1

Create an API key

Store your APINEED API key in the API_NEED_API_KEY environment variable.

2

Send the request

curl 'https://apineed.com/v1/messages' \
  -H "x-api-key: $API_NEED_API_KEY" \
  -H 'Content-Type: application/json' \
  -H 'anthropic-version: 2023-06-01' \
  -d '{
  "max_tokens": 1024,
  "messages": [
    {
      "content": "Hello",
      "role": "user"
    }
  ],
  "model": "claude-sonnet-5-5",
  "stream": false
}'
3

Read the response

Read the completed JSON response and check errors before using the output.

const response = await fetch("https://apineed.com/v1/messages", {
  method: 'POST',
  headers: {
    "x-api-key": "" + (process.env.API_NEED_API_KEY ?? ''),
    "Content-Type": "application/json",
    "anthropic-version": "2023-06-01",
  },
  body: JSON.stringify({
  "max_tokens": 1024,
  "messages": [
    {
      "content": "Hello",
      "role": "user"
    }
  ],
  "model": "claude-sonnet-5-5",
  "stream": false
}),
})

if (!response.ok) throw new Error(await response.text())
console.log(await response.json())

Endpoints

Endpoints currently returned by the live pricing API.

POST/v1/messagesNon-streaming
x-api-key
API_NEED_API_KEY
Content-Type
application/json
anthropic-version
2023-06-01
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5
POST/v1/messagesStreaming
x-api-key
API_NEED_API_KEY
Content-Type
application/json
anthropic-version
2023-06-01
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5
POST/v1beta/models/claude-sonnet-5-5:generateContentNon-streaming
x-goog-api-key
API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model in URL
claude-sonnet-5-5
POST/v1beta/models/claude-sonnet-5-5:streamGenerateContent?alt=sseStreaming
x-goog-api-key
API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model in URL
claude-sonnet-5-5
POST/v1/chat/completionsNon-streaming
Authorization
Bearer API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5
POST/v1/chat/completionsStreaming
Authorization
Bearer API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5
POST/v1/responsesNon-streaming
Authorization
Bearer API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5
POST/v1/responsesStreaming
Authorization
Bearer API_NEED_API_KEY
Content-Type
application/json
HTTP-Referer
optional - your site URL, for rankings
X-Title
optional - your site name, for rankings
Model
claude-sonnet-5-5

Parameters

Supported parameters are shown when verified metadata is available.

NameTypeStatusDescription
modelstringRequiredUse claude-sonnet-5-5.
messagesarrayRequiredConversation messages sent to the model.
max_tokensintegerRequiredMaximum output tokens.

Q&A

Common questions about the claude-sonnet-5-5 API.

Which model ID should I use for claude-sonnet-5-5?

Use claude-sonnet-5-5, exactly as returned by the API Need pricing API.

Which endpoint should I use?

Send a POST request to /v1/messages using your APINEED API key. Follow the request example and parameter table on this page.

How is the API Need price calculated?

See Pricing for the current rates and discounts. Final charges use recorded usage.

How to deploy claude-sonnet-5-5

Connect the live model to your application.

1

Top up

Add usage credit in the product app.

2

Create a key

Create and securely store an API key.

3

Configure the endpoint

Send requests to /v1/messages.

4

Monitor responses

Track status, latency, and errors in your application.

Use claude-sonnet-5-5 in your application.

More live models

claude-opus-5anthropic/claude-opus-5claude-sonnet-5anthropic/claude-sonnet-5claude-fable-5anthropic/claude-fable-5claude-fable-5-1anthropic/claude-fable-5-1