Merge GatewayClaude Sonnet 4.5 model ID, context window & pricing
claude-sonnet
Quick facts
Model ID anthropic/claude-sonnet-4-5-20250929
Source Merge Gateway
Context Window 200000
Pricing $3.00 input / $15.00 output per 1M tokens
Capabilities tool calling, reasoning, temperature control
Model overview
Claude Sonnet 4.5 is an AI model from Merge Gateway with 200000 token context window and text, image, pdf input support.
Published pricing is $3.00 input and $15.00 output per 1M tokens.
- Workloads that use text, image, pdf inputs with text outputs.
- Agent and tool workflows that need function calling.
- Reasoning-heavy prompts where stepwise problem solving matters.
Model ID anthropic/claude-sonnet-4-5-20250929
Provider Merge Gateway
Family claude-sonnet
Status -
Knowledge Cutoff 2025-07-31
Release Date 2025-09-29
Input Modalities text, image, pdf
Output Modalities text
Context Window 200000
Input Limit -
Output Limit 64000
Tool Calling Yes
Reasoning Yes
Structured Output -
Temperature Control Yes
Open Weights No
Input Cost / 1M tokens $3.00
Output Cost / 1M tokens $15.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.30
Cache Write Cost / 1M tokens $3.75