Anthropic: Claude Sonnet 5
Analysis Summary
Claude Sonnet 5 is Anthropic's latest Sonnet-family flagship, released June 2026. It posts an intelligence index of 53.4 and coding index of 71.5, placing it firmly in the top five models across the entire landscape. GPQA at 0.911 and HLE at 0.396 confirm elite reasoning depth, while a long-context reliability score of 0.71 and a 1M token context window make it exceptional for large-document and codebase tasks.
For businesses, this model covers the full stack: autonomous coding agents, long-form document analysis, customer-facing content generation, multimodal workflows with vision, and structured tool-use pipelines. Instruction following and content quality are best-in-class for the Sonnet tier. The only meaningful trade-off is output pricing at $10 per million tokens, which makes it less suited to very high-volume, low-value calls.
At $2 input and $10 output, Sonnet 5 offers strong price-performance for premium workloads. Teams that previously relied on Opus 4.7 or Sonnet 4.6 should consider migrating here; it matches or exceeds those models on every key dimension while being the current benchmarked flagship in the Sonnet line.
Assessed June 30, 2026
Editorial notes
Claude Sonnet 5 from Anthropic delivers frontier-level reasoning, world-class coding, a 1M token context window, vision, tool use, and function calling at $2 input per million tokens, making it one of the most capable and versatile models available.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Anthropic: Claude Sonnet 5 compares
Anthropic: Claude Sonnet 5 ranks #5 of 385 AI models we track for overall intelligence, #6 of 139 for coding. Its 1M-token context window is larger than 91% of the models we list. At $2.00 per million input tokens it is cheaper than 17% of comparable models.
About Anthropic: 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,..
Capabilities
Performance Indices
Source: Artificial Analysis
This model was released recently. Independent benchmark evaluations are typically completed within days of release, so these figures are preliminary and are likely to be updated as testing is finalised.
Benchmark Scores
Intelligence
Content
Benchmark data from Artificial Analysis and Hugging Face
How does Anthropic: Claude Sonnet 5 stack up?
Compare side-by-side with other frontier models.
Model Information
| OpenRouter ID |
anthropic/claude-sonnet-5
|
| Provider | anthropic |
| Release Date | June 30, 2026 |
| Context Length | 1,000,000 tokens |
| Max Completion | 128,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $2.00 | $0.002000 |
| Output | $10.00 | $0.010000 |
Live Performance
Live endpoint metrics, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about Anthropic: Claude Sonnet 5
How much does Anthropic: Claude Sonnet 5 cost?
Anthropic: Claude Sonnet 5 costs $2.00 per million input tokens and $10.00 per million output tokens.
What is the context window of Anthropic: Claude Sonnet 5?
Anthropic: Claude Sonnet 5 has a context window of 1,000,000 tokens (1M).
Is Anthropic: Claude Sonnet 5 good for coding?
On our coding benchmark index, Anthropic: Claude Sonnet 5 ranks #6 of 139 models, placing it in the top quartile of the field for code generation and debugging.
What can Anthropic: Claude Sonnet 5 do?
Anthropic: Claude Sonnet 5 supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Sonnet 5?
Anthropic: Claude Sonnet 5 is developed by Anthropic and was released on June 30, 2026.
