Context Window

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Anthropic Claude vs Gemini 2.5 Flash Lite Preview 09-2025

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

Anthropic Claude

Context window

100K

100,000 tokens · ~75K words

Model page
Google

Model

Gemini 2.5 Flash Lite Preview 09-2025

Image inputTool calling

Context window

1.0M

1,048,576 tokens · ~786K 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.

Anthropic Claude100K
Gemini 2.5 Flash Lite Preview 09-20251.0M

Gemini 2.5 Flash Lite Preview 09-2025 has about 10.5× the context window of the other in this pair.

Token calculator →Memory savings →

Gemini 2.5 Flash Lite Preview 09-2025 has 948% more context capacity (1048K vs 100K tokens). Gemini 2.5 Flash Lite Preview 09-2025 is 98% cheaper on input.

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use Gemini 2.5 Flash Lite Preview 09-2025. Its 1048K context fits entire documents without chunking (vs 100K).

  • RAG / high-volume retrieval

    Use Gemini 2.5 Flash Lite Preview 09-2025. Input tokens are 98% cheaper — critical when sending large retrieved contexts.

  • Long output (reports, code files)

    Use Gemini 2.5 Flash Lite Preview 09-2025. Its 65K 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.

SpecAnthropic ClaudeGemini 2.5 Flash Lite Preview 09-2025
Context window100,000 tokens (100K)1,048,576 tokens (1048K)
Max output tokens8,191 tokens (8K)65,535 tokens (65K)
Speed tierBalancedFast
VisionNoYes
Function callingNoYes
Extended thinkingNoYes
Prompt cachingNoYes
Batch APIYesNo
Release dateN/ASep 2025

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.

ProviderAnthropic Claude inAnthropic Claude outGemini 2.5 Flash Lite Preview 09-2025 inGemini 2.5 Flash Lite Preview 09-2025 out
Aws Bedrock$8.00/M$24.00/M——
Google——$0.100/M$0.400/M
Google Vertex——$0.100/M$0.400/M

Frequently asked questions

Gemini 2.5 Flash Lite Preview 09-2025 has a larger context window: 1048K tokens vs 100K. 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