Context Window

Compare

Claude Sonnet 4 6 Default vs Moonshot V1 8k

This page is context-first: how much text each model can take in one request. Full specs adds capabilities and limits; the pricing matrix below is only about $/million tokens from hosts that list both models.

Anthropic

Model

Claude Sonnet 4 6 Default

Image inputTool calling

Context window

1M

1,000,000 tokens · ~750K words

Model page
Moonshot

Model

Moonshot V1 8k

Tool calling

Context window

8K

8,192 tokens · ~6K words

Model page

Context window · side by side

Bar length is relative to the larger of the two windows (100% = max of this pair). This is not pricing.

Claude Sonnet 4 6 Default1M
Moonshot V1 8k8K

Claude Sonnet 4 6 Default has about 122.1× the context window of the other in this pair.

Token calculator →Memory savings →

Claude Sonnet 4 6 Default has 12107% more context capacity (1000K vs 8K tokens). Moonshot V1 8k is 93% cheaper on input.

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use Claude Sonnet 4 6 Default. Its 1000K context fits entire documents without chunking (vs 8K).

  • RAG / high-volume retrieval

    Use Moonshot V1 8k. Input tokens are 93% cheaper — critical when sending large retrieved contexts.

  • Long output (reports, code files)

    Use Claude Sonnet 4 6 Default. Its 64K max output lets you generate complete artifacts in one request.

Full specs

Context, output, capabilities, and dates. Green highlights the favorable value where we compute a winner.

SpecClaude Sonnet 4 6 DefaultMoonshot V1 8k
Context window1,000,000 tokens (1000K)8,192 tokens (8K)
Max output tokens64,000 tokens (64K)8,192 tokens (8K)
Speed tierBalancedBalanced
VisionYesNo
Function callingYesYes
Extended thinkingYesNo
Prompt cachingYesNo
Batch APIYesNo
Release dateN/AN/A

Pricing matrix

Dollar rates only: hosts that list both models, per 1M tokens. For how much text fits, use the context section above — not this table.

ProviderClaude Sonnet 4 6 Default inClaude Sonnet 4 6 Default outMoonshot V1 8k inMoonshot V1 8k out
Google Vertex$3.00/M$15.00/M——
Moonshot——$0.200/M$2.00/M

Frequently asked questions

Claude Sonnet 4 6 Default has a larger context window: 1000K tokens vs 8K. For long documents, large codebases, or extended agent sessions, the larger context window reduces the need to chunk inputs or summarize history.

Powered by Mem0

Use a smaller model.
Get better results.

Mem0 gives your AI long-term memory so you stop re-sending context on every call. That means you can use a smaller, faster, cheaper model — and still get better answers.

Calculate your savingsLearn about Mem0

Example: a multi-turn chat session

Without Mem0~128K tokens sent
Full history
Repeated info
Old context
With Mem0~20K tokens sent
Key memories
Current turn

80% less to send — works with any model