Context Window

Compare

Claude Opus 4 6 vs Llama 3 1 8b Instant

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 Opus 4 6

Image inputTool calling

Context window

1M

1,000,000 tokens · ~750K words

Model page
Meta

Model

Llama 3 1 8b Instant

Tool calling

Context window

128K

128,000 tokens · ~96K 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 Opus 4 61M
Llama 3 1 8b Instant128K

Claude Opus 4 6 has about 7.8× the context window of the other in this pair.

Token calculator →Memory savings →

Claude Opus 4 6 has 681% more context capacity (1000K vs 128K tokens). Llama 3 1 8b Instant is 99% cheaper on input.

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use Claude Opus 4 6. Its 1000K context fits entire documents without chunking (vs 128K).

  • RAG / high-volume retrieval

    Use Llama 3 1 8b Instant. Input tokens are 99% cheaper — critical when sending large retrieved contexts.

  • Long output (reports, code files)

    Use Claude Opus 4 6. Its 128K 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 Opus 4 6Llama 3 1 8b Instant
Context window1,000,000 tokens (1000K)128,000 tokens (128K)
Max output tokens128,000 tokens (128K)8,192 tokens (8K)
Speed tierDeepFast
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 Opus 4 6 inClaude Opus 4 6 outLlama 3 1 8b Instant inLlama 3 1 8b Instant out
Anthropic$5.00/M$25.00/M——
Aws Bedrock$5.00/M$25.00/M——
Azure$5.00/M$25.00/M——
Google Vertex$5.00/M$25.00/M——
Groq——$0.050/M$0.080/M
Openrouter$5.00/M$25.00/M——

Frequently asked questions

Claude Opus 4 6 has a larger context window: 1000K tokens vs 128K. For long documents, large codebases, or extended agent sessions, the larger context window reduces the need to chunk inputs or summarize history.

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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.

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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