API Need50% off
Uptime
Total Context
1M
Max Output
128K
Input
$2.5/ 1M
Output
$12.5/ 1M
Cache Read
$0.25/ 1M
Cache Write
$3.125/ 1M
AAnthropic: Claude Opus 4.8 API
anthropic/claude-opus-4.8
Claude Opus 4.8 API is a premium Anthropic tier with a 1M context and text, image, and file inputs. Its high-effort benchmark run reaches the top six, making it relevant when peak task quality can outweigh longer completion times. [1]
Claude Opus 4.8 API posts an 82.62 best score and 66.70 median at #6, but its 19.27-point best-to-median gap signals variable results across the test set. It also used more time and tokens than the newer Claude Opus 5 high-effort run. [1][2]
MODALITIES
Price$2.5 / $12.5 / 1MCONTEXT1M
Playground
Test Claude Opus 4.8 API with representative production prompts before using claude-opus-4.8 in a live workflow.
Providers
APINEED lists Claude Opus 4.8 API with text, image, and file input, text output, and a 1M context window. APINEED routing and prepaid rates are identified separately. [1]
Discount
Its official rates match Claude Opus 5, so selection should hinge on measured task behavior rather than token price. APINEED’s 50% reduction applies equally to input and output. The table compares official Claude Opus 4.8 API pricing with the APINEED prepaid rate.
Official
Provider baselineInput $5/ 1MOutput $25/ 1M
BaselineAPINEED50% off
Prepaid creditsInput $2.5/ 1MOutput $12.5/ 1M
Availability
APINEED continuously monitors Claude Opus 4.8 API access and keeps requests on healthy capacity.
System statusLast 90 days
Claude Opus 4.8 API Benchmarks
Claude Opus 4.8 ranks #6, two places behind Claude Opus 5’s high-effort row. Its best score is higher, while Claude Opus 5 records a stronger median and substantially shorter measured completion time. The complete LLM2014 logic 2026-07 table remains below, with Claude Opus 4.8 API highlighted when a current row exists. [2]
| 1st | GPT-5.5 (xhigh) | 83.80 | 77.46 | 7.57% | 494s | 30,811 | $25.51 | $29.57 |
| 2nd | Kimi-K3 (max) | 82.91 | 74.80 | 9.78% | 1095s | 39,912 | $16.76 | $15.00 |
| 3rd | Claude Opus 4.8 (xhigh) | 82.62 | 66.70 | 19.27% | 791s | 41,833 | $28.86 | $24.64 |
| 4th | GPT-5.6 Sol (xhigh) | 81.94 | 72.99 | 10.92% | 369s | 17,433 | $14.43 | $29.57 |
| 5th | Claude Opus 5 (xhigh) | 78.38 | 71.88 | 8.29% | 426s | 26,392 | $18.21 | $24.64 |
| 6th | Qwen3.7-Max (xhigh) | 74.56 | 66.95 | 10.21% | 374s | 54,207 | $7.81 | $5.14 |
| 7th | GLM-5.2 (max) | 73.68 | 58.27 | 20.91% | 890s | 45,683 | $5.12 | $4.00 |
| 8th | Gemini 3.1 Pro (high) | 73.36 | 58.46 | 20.31% | 214s | 25,905 | $8.58 | $11.83 |
| 9th | GPT-5.6 Luna (xhigh) | 69.49 | 51.97 | 25.21% | 242s | 38,083 | $6.31 | $5.91 |
| 10th | DeepSeek V4 Pro (max) | 68.00 | 49.97 | 26.51% | 1468s | 60,558 | $1.45 | $0.86 |
| 11th | Grok 4.5 (high) | 67.59 | 56.72 | 16.08% | 451s | 43,372 | $7.18 | $5.91 |
| 12th | Muse Spark 1.1 | 66.18 | 57.23 | 13.52% | 542s | 42,416 | $4.98 | $4.19 |
| 13th | Gemini 3.5 Flash (high) | 65.92 | 60.39 | 8.39% | 188s | 36,372 | $9.03 | $8.87 |
| 14th | Doubao-Seed-2.1-pro (high) | 58.69 | 49.35 | 15.91% | 2003s | 85,059 | $10.21 | $4.29 |
| 15th | Qwen3.7-Plus (high) | 58.50 | 44.09 | 24.63% | 1237s | 57,152 | $1.83 | $1.14 |
| 16th | Gemini 3.6 Flash (high) | 56.87 | 41.74 | 26.6% | 206s | 26,329 | $5.45 | $7.39 |
| 17th | Tencent Hy3 (high) | 54.42 | 44.60 | 18.04% | 1035s | 52,037 | $0.83 | $0.57 |
| 18th | Claude Sonnet 5 (xhigh) | 51.37 | 43.14 | 16.02% | 529s | 44,118 | $12.18 | $9.86 |
| 19th | DeepSeek V4 Flash (max) | 50.62 | 36.24 | 28.41% | 611s | 49,593 | $0.40 | $0.29 |
| 20th | MiniMax-M3 | 49.18 | 40.94 | 16.75% | 985s | 56,467 | $1.90 | $1.20 |
| 21st | Claude Opus 5 | 42.08 | 31.73 | 24.6% | 154s | 10,180 | $7.02 | $24.64 |
| 22nd | Claude Opus 4.6 | 36.88 | 25.79 | 30.07% | 65s | 4,387 | $3.03 | $24.64 |
| 23rd | Doubao-Seed-2.0-lite 0428 (high) | 35.32 | 26.77 | 24.21% | 656s | 26,726 | $0.38 | $0.51 |
| 24th | Gemini 3.5 Flash (minimal) | 33.24 | 22.22 | 33.15% | 44s | 6,189 | $1.54 | $8.87 |
| 25th | Ling-3.0-flash | 32.53 | 20.62 | 36.61% | 688s | 86,204 | $0.00 | $0.00 |
| 26th | Gemini 3.5 Flash Lite (high) | 30.23 | 22.82 | 24.51% | 188s | 18,297 | $1.26 | $2.46 |
| 27th | GPT-5.5 Instant | 28.87 | 17.66 | 38.83% | 25s | 1,673 | $1.39 | $29.57 |
| 28th | Gemma 4 31B | 27.91 | 22.04 | 21.03% | 770s | 15,050 | $0.17 | $0.39 |
| 29th | MiMo-V2.5-Pro | 26.91 | 13.00 | 51.69% | 478s | 29,443 | $0.71 | $0.86 |
| 30th | Qwen3.7-Plus | 26.19 | 16.23 | 38.03% | 314s | 8,692 | $0.28 | $1.14 |
| 31st | Step-3.7-Flash | 26.18 | 13.74 | 47.52% | 258s | 44,912 | $1.46 | $1.16 |
| 32nd | Qwen3.5-27B | 24.96 | 17.98 | 27.96% | 451s | 26,391 | $0.51 | $0.69 |
| 33rd | Gemini 3.1 Flash Lite (high) | 23.78 | 14.30 | 39.87% | 82s | 28,351 | $1.17 | $1.48 |
| 34th | Claude Sonnet 5 | 23.64 | 10.86 | 54.06% | 109s | 5,962 | $1.65 | $9.86 |
| 35th | Qwen3.7-Max | 22.45 | 18.53 | 17.46% | 196s | 6,710 | $0.97 | $5.14 |
| 36th | ERNIE 5.1 | 20.49 | 15.49 | 24.4% | 457s | 24,093 | $1.73 | $2.57 |
| 37th | openPangu-2.0-Flash | 19.83 | 10.76 | 45.74% | 571s | 28,199 | $0.18 | $0.23 |
| 38th | LongCat-2.0 | 19.40 | 9.74 | 49.79% | 395s | 14,886 | $0.48 | $1.14 |
| 39th | DeepSeek V4 Flash | 19.39 | 13.37 | 31.05% | 63s | 5,286 | $0.04 | $0.29 |
| 40th | Mistral Medium 3.5 | 18.44 | 13.87 | 24.78% | 194s | 27,854 | $5.77 | $7.39 |
| 41st | Doubao-Seed-2.1-pro | 17.49 | 9.74 | 44.31% | 305s | 6,009 | $0.72 | $4.29 |
| 42nd | GLM-5.2 | 14.80 | 10.43 | 29.53% | 23s | 953 | $0.11 | $4.00 |
| 43rd | Ling-2.6-1T | 13.05 | 8.39 | 35.71% | 229s | 4,770 | $0.31 | $2.29 |
| 44th | iFLYTEK Spark X2 | 12.39 | 6.21 | 49.88% | 458s | 11,285 | $0.09 | $0.29 |
| 45th | Gemini 3.1 Flash Lite | 11.79 | 10.28 | 12.81% | 9s | 773 | $0.03 | $1.48 |
| 46th | Mistral Medium 3.5 | 10.83 | 7.13 | 34.16% | 17s | 2,546 | $0.53 | $7.39 |
| 47th | Ling-2.6-flash | 10.07 | 4.85 | 51.84% | 25s | 4,997 | $0.04 | $0.30 |
Quick Start
Connect Claude Opus 4.8 API without changing the OpenAI-style request shape. Evaluate Claude Opus 4.8 on long-form analysis, code review, and difficult tool plans. Track end-to-end latency and generated tokens because the benchmark shows a relatively heavy run profile.
Get your API key
Create an APINEED key for Claude Opus 4.8 API and keep it in an environment variable.
export API_NEED_API_KEY=sk-apineed-v1-...Make your first request
Use claude-opus-4.8 for Claude Opus 4.8 API with the APINEED API. The request shape is compatible with OpenAI chat completions, so most SDKs only need a base URL change.
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: "anthropic/claude-opus-4.8",
messages: [
{ role: "user", content: "Why is the sky blue?" }
]
});
console.log(result.choices[0].message.content);Enable streaming and fallbacks
Add stream: true when Claude Opus 4.8 API should return server-sent events. APINEED keeps routing, provider health, and fallback handling behind the same endpoint.
curl https://apineed.com/v1/chat/completions \
-H "Authorization: Bearer $API_NEED_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.8",
"stream": true,
"messages": [{ "role": "user", "content": "Hello" }]
}'Claude Opus 4.8 API Endpoint
Claude Opus 4.8 API accepts chat conversations here with streaming or non-streaming text output; the supported controls are listed on this page.
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
- anthropic/claude-opus-4.8
Parameters
Claude Opus 4.8 API parameters currently listed for anthropic/claude-opus-4.8 by the OpenRouter Models API. [1]
| Name | Type | Status | Description |
|---|---|---|---|
include_reasoning | boolean | Supported | Includes reasoning content in the response when available. |
max_completion_tokens | integer | Supported | Limits the combined visible and reasoning output tokens. |
max_tokens | integer | Supported | Limits generated output tokens. |
reasoning | object | Supported | Controls reasoning behavior and token allocation. |
reasoning_effort | enum | Supported | Selects the model reasoning effort. |
response_format | object | Supported | Requests a specific response format. |
stop | string or array | Supported | Stops generation at the supplied sequence. |
structured_outputs | boolean | Supported | Enables schema-constrained structured output. |
temperature | number | Supported | Controls sampling randomness. |
tool_choice | string or object | Supported | Controls which tool the model may call. |
tools | array | Supported | Defines tools available to the model. |
verbosity | enum | Supported | Controls response detail for models that expose verbosity. |
Claude Opus 4.8 API Q&A
Model-specific answers for teams comparing Claude Opus 4.8 API on capability, benchmark evidence, integration, and cost.
How does Claude Opus 4.8 API compare with Claude Opus 5?
Both have the same listed token rates. Claude Opus 4.8 has a higher benchmark best score, while Claude Opus 5 has a higher median, better rank, and shorter measured time.
What does Claude Opus 4.8 API’s benchmark gap mean?
The 19.27% gap between its best and median scores indicates that performance varied materially across the evaluated logic problems.
Should latency be considered for Claude Opus 4.8 API?
Yes. The benchmark records 791 seconds average completion time for its highlighted high-effort run, so interactive workloads should be tested directly.
What input types does Claude Opus 4.8 accept?
For Claude Opus 4.8 API, the model catalog lists text, image, and file input with text output and a 1M context window.
Which endpoint serves Claude Opus 4.8 API?
Call Claude Opus 4.8 API through https://apineed.com/v1/chat/completions with claude-opus-4.8 as the model value. Existing OpenAI SDK clients usually need only the APINEED base URL and key.
How do I validate Claude Opus 4.8 API before release?
Evaluate Claude Opus 4.8 API on representative prompts, record quality, latency, and token use, then choose reasoning settings and fallbacks from those results.
How to Deploy the Claude Opus 4.8 API on apineed.com
Deploy Claude Opus 4.8 API through APINEED after validating its model-specific trade-offs above. The API key, credit, and endpoint flow stays consistent across the catalog.
Add credits for Claude Opus 4.8 API
Add credits on APINEED before deploying the Claude Opus 4.8 API. Pay-as-you-go billing lets usage start small and scale with production traffic.
Get your API key
Create an APINEED API key for the Claude Opus 4.8 API. The same key can call Claude Opus 4.8 and other AI APIs through apineed.com.
Set the model slug
Use claude-opus-4.8 as the model value when you deploy the Claude Opus 4.8 API. Keep the APINEED base URL at https://apineed.com/v1.
Send a request to Claude Opus 4.8 API
Send chat completions or responses to the Claude Opus 4.8 API from Claude Code, Codex, or any custom agent. The request keeps its OpenAI-compatible shape.