NanoGPTClaude Sonnet 4.5 model ID, context window & pricing
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Quick facts
Model ID claude-sonnet-4-5-20250929
Source NanoGPT
Context Window 1000000
Pricing $2.99 input / $14.99 output per 1M tokens
Capabilities tool calling, structured output
Model overview
Claude Sonnet 4.5 is an AI model from NanoGPT with 1000000 token context window and text, image, pdf input support.
Published pricing is $2.99 input and $14.99 output per 1M tokens.
- Workloads that use text, image, pdf inputs with text outputs.
- Agent and tool workflows that need function calling.
Model ID claude-sonnet-4-5-20250929
Provider NanoGPT
Family -
Status -
Knowledge Cutoff -
Release Date 2025-09-29
Input Modalities text, image, pdf
Output Modalities text
Context Window 1000000
Input Limit 1000000
Output Limit 64000
Tool Calling Yes
Reasoning No
Structured Output Yes
Temperature Control -
Open Weights No
Input Cost / 1M tokens $2.99
Output Cost / 1M tokens $14.99
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -