Claude Opus 5

AI Claude Opus 5 is Anthropic’s flagship reasoning model for 2026. Optimized for agentic persistence and complex coding, it offers a 1M token context window and near-perfect retrieval for enterprise-grade autonomous workflows and synthesis.

Modalities

Context

API Usage Examples

curl --request POST "https://gptproto.com/v1/chat/completions" \
  --header "Authorization: Bearer $GPTPROTO_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "claude-opus-5",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Claude Opus 5 pricing

Estimate a request with real work scenarios. GPTProto token pricing is 10% below official rates.

UsageQuantityRateCost

Input tokens($4.5/1M)

tokens

$4.5/1M$0.0067

Output tokens($22.5/1M)

tokens

$22.5/1M$0.018

Cache write tokens($5.625/1M)

tokens

$5.625/1M$0.0168

Cache read tokens($0.45/1M)

tokens

$0.45/1M$0.0112

Cost per request$0.0528

Requests

Top-up amount

Top-up $100 and you get:

Top-up credits with permanent validity. You will receive a total of $100.00.

Additional 10% model discount, saving $11.0962 versus direct official Claude API calls.

Related Models

All Models

Claude Opus 5

Current

byClaude1M context$4.5/M input$22.5/M output

Hy4 Preview

byHunyuan$0.7923/M input$2.376/M output

GPT 6 Astra

byOpenAI1.05M context$8/M input$40/M output

Gemini 3.8 Flash

byGoogle1.05M context$0.9/M input$4.5/M output

Claude Fable 5.1

byClaude1M context$9/M input$45/M output

Qwen3.8 Max 0902

byQwen1M context$1.8/M input$5.4/M output

GLM 5.3 Flash

byZ-AI1.31M context$0.15/M input$0.5/M output

DeepSeek v4 Flash Vision Exp

byDeepSeek1.05M context$0.44/M input$1.32/M output

GLM 5.3

byZ-AI1.31M context$1.26/M input$3.96/M output

Gemini 3.7 Flash

byGoogle1.05M context$0.9/M input$4.5/M output

Grok 4.6

byGrok500K context$1.2/M input$3.6/M output

Qwen3.8 Max

byQwen1M context$1.8/M input$5.4/M output

Gemini 3.6 Flash

byGoogle1.05M context$0.9/M input$4.5/M output

Kimi K3

byMoonshotAI1.05M context$2.7/M input$13.5/M output

GPT 5.6 Luna

byOpenAI1.05M context$0.16/M input$0.96/M output

GPT 5.6 Terra

byOpenAI1.05M context$1.6/M input$9.6/M output

Grok 4.5

byGrok500K context$1.2/M input$3.6/M output

Claude Sonnet 5

byClaude1M context$1.8/M input$9/M output

MiniMax M3

byMiniMax1.05M context$0.48/M input$0.96/M output

GLM 5.2

byZ-AI1.05M context$1.26/M input$3.96/M output

Claude Fable 5

byClaude1M context$9/M input$45/M output

Qwen3.7 Max

byQwen1M context$0.36/M input$1.44/M output

Claude Opus 4.8 Thinking

byClaude1M context$4.5/M input$22.5/M output

Claude Opus 4.8

byClaude1M context$4.5/M input$22.5/M output

DeepSeek v4 Flash

byDeepSeek1.05M context$0.374/M input$1.122/M output

DeepSeek v4 Pro

byDeepSeek1.05M context$1.122/M input$3.366/M output

Grok 4.3

byGrok1M context$0.75/M input$1.5/M output

Kimi K2.6

byMoonshotAI262K context$0.855/M input$3.6/M output

Claude Opus 4.7 Thinking

byClaude1M context$4.5/M input$22.5/M output

MiniMax M2.5

byMiniMax205K context$0.24/M input$0.96/M output

Kimi K2.5

byMoonshotAI262K context$0.54/M input$2.7/M output

Doubao Seed 1.6 Thinking (Build 250715)

byBytedance262K context$0.0971/M input$0.9714/M output

Doubao Seed 1.6 Thinking (Build 250615)

byBytedance262K context$0.0971/M input$0.9714/M output

Doubao Seed 1.6 Flash (Build 250615)

byBytedance262K context$0.0182/M input$0.1821/M output

Model					Input → Output
Claude Opus 5Current $		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: ImageInput: Document Output: Text
Hy4 Preview $		—	$0.79 / $2.38 per 1M	— / $0.04 per 1M	Input: Text Output: Text
GPT 6 Astra $		1.05M	$8.00 / $40.00 per 1M	$10.00 / $0.80 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.8 Flash $		1.05M	$0.90 / $4.50 per 1M	$0.60 / $0.09 per 1M	Input: TextInput: ImageInput: VideoInput: DocumentInput: Audio Output: Text
Claude Fable 5.1 $		1M	$9.00 / $45.00 per 1M	$11.25 / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Qwen3.8 Max 0902 $		1M	$1.80 / $5.40 per 1M	$2.25 / $0.23 per 1M	Input: TextInput: ImageInput: VideoInput: DocumentInput: Audio Output: Text
GLM 5.3 Flash $	—	1.31M	$0.15 / $0.50 per 1M	— / $0.03 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
DeepSeek v4 Flash Vision Exp $	—	1.05M	$0.44 / $1.32 per 1M	— / $0.01 per 1M	Input: TextInput: Image Output: Text
GLM 5.3 $		1.31M	$1.26 / $3.96 per 1M	— / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.7 Flash $		1.05M	$0.90 / $4.50 per 1M	$0.60 / $0.09 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.6 $		500K	$1.20 / $3.60 per 1M	— / $0.30 per 1M	Input: TextInput: Image Output: Text
Qwen3.8 Max $		1M	$1.80 / $5.40 per 1M	$2.25 / $0.23 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
Gemini 3.6 Flash $		1.05M	$0.90 / $4.50 per 1M	$0.60 / $0.09 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K3 $		1.05M	$2.70 / $13.50 per 1M	$0.27 / $0.27 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Luna $		1.05M	$0.16 / $0.96 per 1M	$0.20 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Terra $		1.05M	$1.60 / $9.60 per 1M	$2.00 / $0.16 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.5 $		500K	$1.20 / $3.60 per 1M	$0.30 / $0.30 per 1M	Input: TextInput: Image Output: Text
Claude Sonnet 5 $		1M	$1.80 / $9.00 per 1M	$2.25 / $0.18 per 1M	Input: TextInput: Document Output: Text
MiniMax M3 $		1.05M	$0.48 / $0.96 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
GLM 5.2 $		1.05M	$1.26 / $3.96 per 1M	$0.23 / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Claude Fable 5 $		1M	$9.00 / $45.00 per 1M	$11.25 / $0.90 per 1M	Input: TextInput: Document Output: Text
Qwen3.7 Max $		1M	$0.36 / $1.44 per 1M	$0.07 / $0.07 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.8 Thinking $		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.8 $		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: Document Output: Text
DeepSeek v4 Flash $		1.05M	$0.37 / $1.12 per 1M	— / $0.01 per 1M	Input: Text Output: Text
DeepSeek v4 Pro $		1.05M	$1.12 / $3.37 per 1M	— / $0.04 per 1M	Input: Text Output: Text
Grok 4.3 $		1M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Kimi K2.6 $		262K	$0.85 / $3.60 per 1M	$0.14 / $0.14 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.7 Thinking $		1M	$4.50 / $22.50 per 1M	$5.63 / $0.45 per 1M	Input: TextInput: Document Output: Text
MiniMax M2.5 $		205K	$0.24 / $0.96 per 1M	$0.30 / $0.02 per 1M	Input: TextInput: Document Output: Text
Kimi K2.5 $		262K	$0.54 / $2.70 per 1M	$0.09 / $0.09 per 1M	Input: TextInput: Document Output: Text
Doubao Seed 1.6 Thinking (Build 250715) $		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Thinking (Build 250615) $		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Flash (Build 250615) $		262K	$0.02 / $0.18 per 1M	—	Input: TextInput: Image Output: Text

Claude Opus 5 AI Key Features

The standout technical capabilities that make this ai the preferred choice for enterprise reasoning.

Proactive Agentic Persistence

This ai is tuned for long-horizon tasks, writing its own scripts to overcome environment limitations while iterating autonomously on complex goals.

1M Token Context Window

The ai supports massive datasets with near-perfect needle-in-a-haystack recall and a highly efficient 512-token prompt caching system.

Thinking-on-by-Default

Internal reasoning traces allow the ai to self-correct and verify logic, leading to a 3x score increase on the ARC-AGI 3 benchmark.

Native Web Search Tool

Access real-time web data with dynamic filtering and response inclusion control, ensuring the ai always has up-to-date facts with citations.

Claude Opus 5 AI FAQ

Find answers regarding integration, pricing, and capabilities for the Claude Opus 5 ai reasoning model on GPTProto.com.

How much does AI Claude Opus 5 cost per million tokens?

This ai model is priced at $5.00 per 1M input tokens and $25.00 per 1M output tokens. It matches the reasoning performance of Fable-tier models but at a significantly lower cost. Our platform offers an additional 90% discount on prompt cache hits and a 50% discount for Batch API usage with 24-hour turnaround, making it a highly cost-effective choice for large-scale enterprise ai operations and long-running autonomous agent tasks.

Does this ai model support a 1M token context window?

Yes, this ai supports a context window of 1,000,000 tokens with 128,000 tokens of maximum output. It features industry-leading retrieval accuracy, ensuring that specific details are not lost even when processing thousands of pages of documentation. The ai also has a reduced prompt cache minimum of just 512 tokens, allowing for efficient and fast context management for developers building ai-driven knowledge synthesis tools.

What is the "Thinking-on-by-Default" ai feature?

Thinking-on-by-Default means the ai generates internal reasoning traces to verify its steps before providing an answer. This process reduces logical fallacies and improves performance in complex coding and mathematical reasoning. While this ai feature adds a slight latency overhead (2–4 seconds time-to-first-token), it ensures a much higher quality of response compared to standard chat models that do not use internal reasoning.

Can AI Claude Opus 5 handle autonomous agent workflows?

This ai is specifically tuned for agentic-horizon tasks. It demonstrates proactive persistence, meaning it can autonomously find ways to overcome limitations in its environment. For example, the ai can write its own scripts to process data or create vision pipelines to interpret images. This makes it ideal for autonomous software engineering agents and multi-step business process automation that requires high levels of reliability.

Is my data used to train the AI Claude Opus 5 model?

No. When you access AI Claude Opus 5 through the GPTProto.com platform, all calls are excluded from Anthropic's training datasets by default. We provide enterprise-grade privacy and security, ensuring that your proprietary data and prompts remain confidential. This makes the ai safe for use in sensitive legal, financial, and scientific research environments where data sovereignty and zero data retention are critical requirements.

Does this ai model have a native web search tool?

Yes, this ai includes a powerful native web search tool (version web_search_20260318) that allows it to access real-time information beyond its training cutoff. It supports dynamic filtering, where the ai writes code to filter search results for relevance before they enter the context window, saving you tokens. This ai tool is perfect for answering questions about current news, stock prices, or recent technical announcements with full citations.