Anthropic: Claude Sonnet 5

anthropic/claude-sonnet-5

Modalities: text+image+file->text
In / out price: $2 / $10
Context: 1M
Released: Jun 30, 2026
Knowledge cutoff: —

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,...

VisionToolsReasoningStructured output1M context

Supported parameters

include_reasoning
Include reasoning
Include a reasoning summary in the response.
max_completion_tokens
Max completion tokens
Same idea as max_tokens. Some newer models use this field instead.
max_tokens
Max tokens
Upper bound on generated tokens. Output stops at the limit.
reasoning
Reasoning
Enable or configure reasoning. The fields differ by model.
reasoning_effort
Reasoning effort
How much compute to spend reasoning. Often low, medium, or high.
response_format
Response format
For example json_object or json_schema, to constrain the shape.
stop
Stop
Stop when these strings are produced. A string or an array of strings.
structured_outputs
Structured outputs
Generate a parseable structure that follows a JSON Schema.
tool_choice
Tool choice
Whether to call a tool: auto, none, or a named function.
tools
Tools
Function definitions the model may call via tool_calls.
verbosity
Verbosity
Ask the model for a shorter or longer answer.

Models Anthropic

Anthropic: Claude Sonnet 5

anthropic/claude-sonnet-5

Try this model

Modalities: text+image+file->text
In / out price: $2 / $10
Context: 1M
Released: Jun 30, 2026
Knowledge cutoff: —

VisionToolsReasoningStructured output1M context

Supported parameters

include_reasoning
Include reasoning
Include a reasoning summary in the response.
max_completion_tokens
Max completion tokens
Same idea as max_tokens. Some newer models use this field instead.
max_tokens
Max tokens
Upper bound on generated tokens. Output stops at the limit.
reasoning
Reasoning
Enable or configure reasoning. The fields differ by model.
reasoning_effort
Reasoning effort
How much compute to spend reasoning. Often low, medium, or high.
response_format
Response format
For example json_object or json_schema, to constrain the shape.
stop
Stop
Stop when these strings are produced. A string or an array of strings.
structured_outputs
Structured outputs
Generate a parseable structure that follows a JSON Schema.
tool_choice
Tool choice
Whether to call a tool: auto, none, or a named function.
tools
Tools
Function definitions the model may call via tool_calls.
verbosity
Verbosity
Ask the model for a shorter or longer answer.