Claude Opus 5
Anthropic's high-intelligence model for complex coding, agentic tasks, and professional work — 1M context, reasoning on by default, vision, and web search.
Overview
What is Claude Opus 5
Claude Opus 5 is Anthropic's advanced AI model, released on July 24, 2026, designed for deep reasoning, agentic coding, and long-horizon knowledge work. It features a 1M token context window, vision input, function calling, web search, and reasoning capabilities, making it ideal for complex professional tasks.
Running it privately on Venice
On Venice, Claude Opus 5 runs with full privacy: your prompts are anonymized and never stored, profiled, or used for training. You get the same powerful model Anthropic offers, but with end-to-end sovereignty — no data retention, uncensored access, and no personal history tied to your usage. This is AI as it should be: capable, private, and permissionless.
Assessment
Strengths and limitations
- State-of-the-art performance in coding, agentic tasks, and long-horizon reasoning, often matching or exceeding more expensive models like Fable 5.
- 1M token context window enables deep document analysis, extended codebase reasoning, and long-running autonomous agents.
- Supports vision, web search, and function calling — ideal for real-world tool-integrated workflows.
- Available in a 'fast' variant (claude-opus-5-fast) for time-sensitive applications requiring quicker output.
- Cost-effective intelligence: delivers Fable 5-level performance at half the price.
- Not open-source or open-weights: cannot be self-hosted or fine-tuned.
- Higher cost per token than smaller or distilled models like Sonnet or Flash variants.
- Slower than some competitors in raw output speed, especially at max effort settings.
- Not uncensored: follows Anthropic's safety policies and content filters.
Capabilities
What it supports
- Tool use / function calling
- Vision (image input)
- Reasoning
- Web search
- Code-optimized
- Structured output (JSON schema)
- Audio input
- Video input
- Multiple image inputs
- Log probabilities
Variants
Claude Opus 5 serving tiers
Claude Opus 5 runs on Venice in 2 serving tiers: the same model at different speeds and prices. Pick by latency needs; each tier is its own model id on the API.
| Tier | What it is | Price / 1M tokens | Context | Model ID |
|---|---|---|---|---|
| Standardflagship | Full-quality serving at standard pricing | $6 in · $30 out | 1,000K tokens | claude-opus-5 |
| Fast | The same model served with faster output | $12 in · $60 out | 1,000K tokens | claude-opus-5-fast |
Pricing and context come straight from the Venice model API and refresh with every catalog ingest. The specs and pricing on this page are for the standard tier; pass the model id of the tier you want to the API.
Claude Opus 5 Standard
Full-quality serving at standard pricing. $6 in · $30 out per 1M tokens, 1,000K tokens context.
claude-opus-5Claude Opus 5 Fast
The same model served with faster output. $12 in · $60 out per 1M tokens, 1,000K tokens context.
claude-opus-5-fastSpecifications
Datasheet
- Maker
- Anthropic
- Released
- July 24, 2026
- Modality
- Text, Vision (image input), Function calling, Web search
- Architecture
- Transformer-based
- Parameters
- Not publicly disclosed
- Open weights
- No — proprietary
- Context window
- 1,000K tokens
- Max output
- 128K tokens
- Capabilities
- Vision, Function calling, Reasoning, Web search, Code-optimized
- Privacy on Venice
- Anonymized — prompts not stored
- Available on Venice since
- Jul 2026
- License
- Proprietary
API
Call it from your code
Venice exposes an OpenAI-compatible API. Point your base URL at Venice and pass the model id.
curl https://api.venice.ai/api/v1/chat/completions \
-H "Authorization: Bearer $VENICE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-opus-5",
"messages": [{ "role": "user", "content": "Explain quantum tunneling simply." }]
}'Pricing
What it costs on Venice
Billed per token on Venice: $6 per 1M input tokens and $30 per 1M output tokens.
New Venice accounts include a free daily allowance and 500 welcome credits — no credit card required.
Alternatives
How it compares
| Model | Best for | Context | Strengths | Open weights | Price (Venice) |
|---|---|---|---|---|---|
| Claude Opus 5 | Balanced power and cost — the new default for complex tasks. | 1M tokens | Agentic coding, reasoning, vision | No | $6 in · $30 out / 1M |
| Claude Fable 5 | More capable but twice the price — use for exceptional tasks. | 1M tokens | Frontier intelligence | No | $12 in · $60 out / 1M |
| Claude Sonnet 4.6 | Lower-cost alternative for lighter workloads. | 1M tokens | Efficient reasoning | No | $3.60 in · $18 out / 1M |
| DeepSeek V4 Flash 0731 | Much cheaper but less capable — ideal for high-volume, low-complexity tasks. | 1M tokens | Speed, cost efficiency | No | $0.17 in · $0.35 out / 1M |
Balanced power and cost — the new default for complex tasks.
Use cases
What it is good for
- 01Enterprise automation and AI agents requiring long memory and deep reasoning.
- 02Complex software development: code generation, debugging, and refactoring across large codebases.
- 03Legal and financial document analysis with vision support for scanned PDFs.
- 04Research synthesis across hundreds of sources using web search and long context.
- 05Customer support automation with tool use for ticketing systems and databases.
Prompting
Getting better results
Use structured output with JSON schema for reliable data extraction.
Enable web search when up-to-date information is needed.
Leverage vision input for multimodal analysis — include charts, diagrams, or screenshots.
Use the 'thinking' mode to improve reasoning depth on complex queries.
Switch to claude-opus-5-fast when latency matters more than marginal quality gains.
Version history
Immediate predecessor
Current flagship Opus model
FAQ
Frequently asked questions
Claude Opus 5 is Anthropic's high-performance AI model, released on July 24, 2026, designed for complex reasoning, agentic coding, and professional work. It features a 1M token context window, vision input, web search, and function calling.
On Venice, Claude Opus 5 is priced at $6 per million input tokens and $30 per million output tokens. The fast variant, claude-opus-5-fast, costs $12 in and $60 out per million tokens.
No. Claude Opus 5 is a proprietary model developed by Anthropic. It is not open-source, and weights are not publicly available. Access is via API with usage-based pricing.
Yes. Claude Opus 5 supports image input and can reason over visual content, making it suitable for multimodal tasks like document analysis, chart interpretation, and visual QA.
Yes. Claude Opus 5 supports function calling and tool use, enabling integration with external systems like databases, APIs, and code executors for real-world workflows.
Claude Opus 5 has a 1,000,000 token context window — the largest available on Venice — allowing it to process entire codebases, long documents, or extended conversations in a single session.
claude-opus-5-fast is a variant of Claude Opus 5 optimized for lower latency. It delivers the same model intelligence but with faster output at double the token cost: $12 in and $60 out per million tokens.
Claude Opus 5 offers better value for complex reasoning and coding tasks at half the price of GPT-5.6 Sol. While GPT-5.6 Sol leads in some development agent workflows, Opus 5 matches or exceeds it on many benchmarks for professional work at lower cost.
Run Claude Opus 5 privately
No prompt logging. No data used for training.