Claude Sonnet 5 (Adaptive Reasoning, Medium Effort)
Anthropic • text#92 of 616 in intelligence
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Specifications
Context Window
1.0M tokens
Input Price/1M
$2.00
#604 of 744
Output Price/1M
$10.00
Parameters
—
Speed
58 tok/s
#253 of 602
Latency (TTFT)
1.2s
Max Output
128K tokens
Cost per Task
7.1
AA Score / US$ · higher = better
Benchmarks
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) results on the main AI model evaluation benchmarks. Higher scores indicate better performance.
overall
| Benchmark | Score | Maximum | Methodology |
|---|---|---|---|
| AA Intelligence Index | 28.4 | 100.0 | Artificial Analysis official API |
Information
- Release date
- June 30, 2026
- Tool Calling
- ✅ Supported
- Vision
- ✅ Supported
- Audio
- ❌ Not supported
Full Analysis: Claude Sonnet 5 (Adaptive Reasoning, Medium Effort)
What is Claude Sonnet 5 (Adaptive Reasoning, Medium Effort)?
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) is an AI model developed by Anthropic, classified as a text model. It focuses on text processing and natural language generation. As a proprietary model, it is available via Anthropic's cloud API. With a context window of 1.0M tokens, it is suitable for processing long documents such as contracts, books, and complete codebases.
Pricing & Costs in 2026
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) is usage-based, priced at $2/1M input tokens and $10/1M output tokens. For context: 1 million tokens is approximately 750,000 words, or about 10 average-length books. The mid-range pricing balances quality and cost for most professional applications.
Benchmarks & Performance
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) was evaluated on 1 different benchmarks, covering categories like overall. Results show moderate performance across available evaluations.
It's important to note that benchmarks measure specific aspects and don't capture the full user experience. Factors like instruction adherence, behavior in long conversations, and real-world task quality vary significantly between models and aren't always reflected in standard scores.
Recommended Use Cases
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) specializes in text, offering advanced capabilities for creating and processing text content.
Comparison with Alternatives
In the 2026 AI model ecosystem, Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) competes directly with similarly capable models. Key competitors include GPT (OpenAI), Gemini (Google), and open source models like Llama (Meta) and DeepSeek. The choice between models depends on the specific use case, budget, latency requirements, and need for features like multimodality and tool calling.
For a detailed side-by-side comparison, use our comparison tool or check the overall model ranking.
Frequently Asked Questions
What is Claude Sonnet 5 (Adaptive Reasoning, Medium Effort)?
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) is an AI model developed by Anthropic. It is a text model.
How much does Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) cost?
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) costs $2/1M input tokens and $10/1M output tokens. For heavy usage (e.g., a chatbot handling 100k messages/month), costs can range from $10 to $1,000 depending on volume.
How does Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) compare with other models?
In available benchmarks, Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) scored: AA Intelligence Index: 28.4/100. See the full table above for a detailed comparison.
Is Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) open source?
No, Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) is a proprietary model from Anthropic. It is available via cloud API. For open source alternatives, check our open source model ranking.
What is Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) best for?
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) excels at multimodal tasks including text and vision. With its large context window, it handles long documents, codebases, and extended conversations. It supports tool calling for API integrations and automation.
Last updated: September 12, 2026 • View methodology →