Claude Sonnet 5

claude-sonnet-5

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, and x-high), a 1M-token context window, and text, image, and file inputs. Sonnet 5 uses an updated tokenizer and includes real-time cyber safeguards that block certain high-risk dual-use activities.

Total Context

1Mtokens

Max Output

128Ktokens

Released

Jun 30, 2026

Modalities

Claude Sonnet 5 Price

Input PriceOutput PriceCache Read
$2/M$10/M$0.2/M

How do I use Claude Sonnet 5 through the API?

POSTopenai/v1/chat/completions
POSTanthropic/v1/messages

Claude Sonnet 5 Benchmark

41.7

/100

Artificial Analysis Intelligence Index

Artificial Analysis broad capability aggregate

Index score

66.4

/100

Artificial Analysis Coding Index

Artificial Analysis software task aggregate

Index score

Knowledge & Reasoning

GPQA

Advanced science problem solving

80%

HLE

Broad expert-level exam set

17.8%

Coding & Engineering

SciCode

Scientific coding challenges

48.6%

Instruction Following & Agent Tasks

AA-LCR

Long-context reasoning

58.7%

Claude Sonnet 5 Media and Demos

Selected public announcements, discussions, and videos about Claude Sonnet 5.

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Claude Sonnet 5 FAQs

Practical answers about Claude Sonnet 5 capabilities, tradeoffs, availability, and TokenHub API use.

What is Claude Sonnet 5?+

Claude Sonnet 5 is Anthropic's general-purpose Sonnet model for reasoning, coding, tool use, and knowledge work. It is designed to combine strong intelligence with Sonnet-class speed and cost.

What is Claude Sonnet 5 best used for?+

It is well suited to multi-step coding, debugging, agent workflows, research synthesis, document analysis, and professional tasks that benefit from planning and tool use.

What are the main strengths of Claude Sonnet 5?+

Its strengths include improved reasoning, coding, tool use, and task follow-through compared with Sonnet 4.6. Adaptive thinking is enabled by default, and the API supports a 1-million-token context window.

What limitations or API tradeoffs should I consider?+

Important outputs still need review. Manual extended thinking is not accepted, non-default temperature, top_p, or top_k values can cause API errors, and Anthropic's Priority Tier is not available for this model.

How do I use Claude Sonnet 5 through TokenHub?+

Use the model ID claude-sonnet-5 in your TokenHub API request with your TokenHub endpoint and credentials. Confirm the request format and supported parameters in the TokenHub integration documentation before production use.

What are the pricing and availability details?+

Anthropic lists introductory API pricing of $2 per million input tokens and $10 per million output tokens through August 31, 2026, followed by $3 and $15. TokenHub pricing or routing availability may differ, so check the current model page before use.

When should I choose Claude Sonnet 5 instead of another model?+

Choose it when you need a strong balance of agentic capability, coding quality, speed, and cost. Compare it with a higher-tier model for the hardest tasks and with smaller models for high-volume, latency-sensitive workloads.