Anthropic: Claude Sonnet 5 API

claude-sonnet-5

Claude Sonnet 5 API is the lower-cost Claude 5 option in this catalog, combining a 1M context with text, image, and file input. It targets everyday agents and document workflows that do not need Opus-tier token pricing. ^[1]

LLM2014 logic 2026-08: Claude Sonnet 5 API (xhigh) ranks #21 with a 39.57 median, 47.80 best score, and 545s average time; Claude Sonnet 5 (standard) ranks #41 with a 9.67 median, 16.49 best score, and 113s average time. Configurations are separate. ^[1][2]

MODALITIES

Price$1 / $5 / 1MCONTEXT1M

curl https://apineed.com/v1/chat/completions \
  -H "Authorization: Bearer $API_NEED_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-sonnet-5"}'

Playground

Try Claude Sonnet 5 in the API Need Playground.

Provider

Current API Need routing and live API pricing. ^[1]

API Need50% off

Uptime

Total Context

Max Output

128K

Input

$1/ 1M

Output

$5/ 1M

Cache Read

$0.1/ 1M

Cache Write

$1.25/ 1M

Pricing

Pricing uses the current live API Need configuration for this model.

Official

Provider baseline

Input $2/ 1MOutput $10/ 1M

Baseline

APINEED50% off

Prepaid credits

Input $1/ 1MOutput $5/ 1M

Availability

Recent public performance data for this model.

API statusLive metrics

API Need gateway99.84% uptime

Benchmarks

Editorial benchmark data is shown when this model has a verified match. ^[2]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.


1st	GPT-5.5 (xhigh)	80.23	73.89	7.9%	534s	33,219	$27.51	$29.57
2nd	GPT-5.6 Sol (xhigh)	78.37	69.42	11.42%	381s	17,769	$14.71	$29.57
3rd	Kimi-K3 (max)	75.77	67.66	10.7%	1144s	41,432	$17.40	$15.00
4th	Claude Opus 5 (xhigh)	71.24	64.74	9.12%	437s	26,705	$18.43	$24.64
5th	GLM-5.3 (max)	74.48	63.91	14.19%	1009s	57,408	$6.43	$4.00
6th	GLM-5.3-Flash (max)	69.55	60.52	12.98%	863s	38,787	$0.22	$0.20
7th	Qwen3.8-Max (xhigh)	64.68	60.05	7.16%	1297s	65,135	$9.38	$5.14
8th	DeepSeek V4 Pro 0813(max)	70.13	59.63	14.97%	1601s	73,350	$7.92	$3.86
9th	DeepSeek-V4-Flash-Vision-Exp (max)	62.86	58.10	7.57%	974s	79,420	$2.86	$1.29
10th	Gemini 3.7 Flash (high)	66.62	57.56	13.6%	131s	26,596	$2.75	$3.70
11th	Grok 4.6 (high)	67.93	56.41	16.96%	813s	33,807	$5.60	$5.91
12th	Gemini 3.1 Pro (high)	69.35	55.84	19.48%	235s	28,338	$9.39	$11.83
13th	DeepSeek V4 Flash 0731 (max)	66.34	55.23	16.75%	881s	74,657	$2.69	$1.29
14th	GLM-5.2 (max)	66.53	54.70	17.78%	891s	46,273	$5.18	$4.00
15th	Qwen3.8-Flash (xhigh)	65.44	54.49	16.73%	844s	64,942	$0.70	$0.39
16th	GPT-5.6 Luna (xhigh)	65.92	51.62	21.69%	247s	37,885	$1.25	$1.18
17th	Qwen3.8-27B (xhigh)	58.48	47.65	18.52%	2318s	73,987	$3.55	$1.71
18th	Doubao-Seed-2.1-pro (high)	55.12	45.78	16.94%	2026s	85,238	$10.23	$4.29
19th	Muse Spark 1.2 (xhigh)	57.93	45.14	22.08%	359s	47,209	$5.54	$4.19
20th	Gemini 3.7 Flash (low)	53.50	44.06	17.64%	59s	10,673	$1.10	$3.70
21st	Claude Sonnet 5 (xhigh)	47.80	39.57	17.22%	545s	45,066	$12.44	$9.86
22nd	Tencent Hy3 (high)	57.89	39.51	31.75%	1076s	53,214	$0.85	$0.57
23rd	Qwen3.7-Plus (high)	51.36	38.74	24.57%	1254s	58,610	$1.88	$1.14
24th	MiniMax-M3	43.83	37.37	14.74%	982s	57,486	$1.93	$1.20
25th	Doubao-Seed-2.0-lite 0428 (high)	34.13	26.18	23.29%	669s	27,845	$0.40	$0.51
26th	Claude Opus 5	34.94	24.58	29.65%	156s	10,261	$7.08	$24.64
27th	Gemini 3.5 Flash Lite (high)	29.51	20.44	30.74%	192s	17,842	$1.23	$2.46
28th	Ling-3.0-flash	28.37	17.05	39.9%	735s	95,538	N/A	N/A
29th	Gemma 4 31B	21.36	16.09	24.67%	756s	15,290	$0.17	$0.39
30th	openPangu-2.0-Pro	20.02	15.75	21.33%	645s	28,215	$1.64	$2.07
31st	Qwen3.7-Plus	20.84	15.63	25%	323s	8,910	$0.29	$1.14
32nd	GPT-5.5 Instant	21.73	14.09	35.16%	28s	1,712	$1.42	$29.57
33rd	Mistral Medium 3.5	17.25	13.87	19.59%	200s	28,129	$5.82	$7.39
34th	Step-3.7-Flash	26.18	13.74	47.52%	282s	47,180	$1.53	$1.16
35th	MiMo-V2.5-Pro	26.31	13.00	50.59%	550s	33,095	$0.79	$0.86
36th	Dots3-Note Preview	18.63	12.95	30.49%	210s	28,386	N/A	N/A
37th	ERNIE 5.1	16.32	11.32	30.64%	468s	24,522	$1.77	$2.57
38th	Qwen3.8-27B	16.48	10.61	35.62%	192s	8,914	$0.43	$1.71
39th	openPangu-2.0-Flash	19.24	10.16	47.19%	583s	29,052	$0.19	$0.23
40th	LongCat-2.0	17.61	9.74	44.69%	374s	14,273	$0.46	$1.14
41st	Claude Sonnet 5	16.49	9.67	41.36%	113s	6,175	$1.70	$9.86
42nd	GLM-5.2	12.42	8.05	35.19%	24s	929	$0.10	$4.00
43rd	DeepSeek V4 Flash 0731	13.57	7.93	41.56%	53s	4,621	$0.17	$1.29
44th	Gemini 3.1 Flash Lite	9.01	7.11	21.09%	11s	707	$0.03	$1.48
45th	Doubao-Seed-2.1-pro	13.03	6.17	52.65%	319s	6,948	$0.83	$4.29
46th	Mistral Medium 3.5	8.45	5.93	29.82%	18s	2,589	$0.54	$7.39

Quick Start

Call Claude Sonnet 5 with its real backend model ID.

Get an API key

Create an API key in the product app.

export API_NEED_API_KEY=sk-apineed-v1-...

Send a request

Call /v1/chat/completions with model claude-sonnet-5.

TypeScript SDKPythoncURLOpenAI SDK

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.API_NEED_API_KEY,
  baseURL: "https://apineed.com/v1"
});

const result = await client.chat.completions.create({
  model: "claude-sonnet-5",
  messages: [
    { role: "user", content: "Why is the sky blue?" }
  ]
});

console.log(result.choices[0].message.content);

Handle the response

Validate responses and errors in your application.

curl https://apineed.com/v1/chat/completions \
  -H "Authorization: Bearer $API_NEED_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "claude-sonnet-5",
  "stream": true,
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'

Endpoints

Endpoints currently returned by the live pricing API.

POST/v1/messages

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

POST/v1/chat/completions

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

Parameters

Supported parameters are shown when verified metadata is available. ^[1]

No verified parameter metadata is currently available.

Claude Sonnet 5 API Q&A

Model-specific answers for teams comparing Claude Sonnet 5 API on capability, benchmark evidence, integration, and cost.

Is Claude Sonnet 5 API cheaper than Claude Opus 5?

Yes. Official Claude Sonnet 5 pricing is $2 input and $10 output per million tokens, compared with $5 and $25 for Claude Opus 5.

Why are there two Claude Sonnet 5 API benchmark rows?

LLM2014 reports standard and higher-effort runs separately. They use different reasoning budgets and should not be compared as identical configurations.

What is Claude Sonnet 5 API best positioned for?

Its price, 1M context, and mixed input support make it suitable for routine production agents, document review, and multimodal business workflows.

Can Claude Sonnet 5 use tools and structured output?

For Claude Sonnet 5 API, the catalog lists tools, tool choice, reasoning controls, and structured outputs among its supported parameters.

Which endpoint serves Claude Sonnet 5 API?

Call Claude Sonnet 5 API through https://apineed.com/v1/chat/completions with claude-sonnet-5 as the model value. Existing OpenAI SDK clients usually need only the APINEED base URL and key.

How do I validate Claude Sonnet 5 API before release?

Evaluate Claude Sonnet 5 API on representative prompts, record quality, latency, and token use, then choose reasoning settings and fallbacks from those results.

How to deploy Claude Sonnet 5

Connect the live model to your application.

Top up

Add usage credit in the product app.

Create a key

Create and securely store an API key.

Configure the endpoint

Send requests to /v1/chat/completions.

Monitor responses

Track status, latency, and errors in your application.

More live models

Claude Opus 5anthropic/claude-opus-5 Claude Fable 5anthropic/claude-fable-5 Claude Haiku 4.5anthropic/claude-haiku-4-5 Claude Fable 5.1anthropic/claude-fable-5-1