Context Window

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Gpt 4o Realtime Preview 2025 06 03 vs Minimax M2 1 Lightning

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.

Openai

Model

Gpt 4o Realtime Preview 2025 06 03

Tool calling

Context window

128K

128,000 tokens · ~96K words

Model page
Minimax

Model

Minimax M2 1 Lightning

Tool calling

Context window

1M

1,000,000 tokens · ~750K 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.

Gpt 4o Realtime Preview 2025 06 03128K
Minimax M2 1 Lightning1M

Minimax M2 1 Lightning has about 7.8× the context window of the other in this pair.

Token calculator →Memory savings →

Minimax M2 1 Lightning has 681% more context capacity (1000K vs 128K tokens). Minimax M2 1 Lightning is 94% cheaper on input.

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use Minimax M2 1 Lightning. Its 1000K context fits entire documents without chunking (vs 128K).

  • RAG / high-volume retrieval

    Use Minimax M2 1 Lightning. Input tokens are 94% cheaper — critical when sending large retrieved contexts.

  • Long output (reports, code files)

    Use Minimax M2 1 Lightning. Its 8K 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.

SpecGpt 4o Realtime Preview 2025 06 03Minimax M2 1 Lightning
Context window128,000 tokens (128K)1,000,000 tokens (1000K)
Max output tokens4,096 tokens (4K)8,192 tokens (8K)
Speed tierBalancedFast
VisionNoNo
Function callingYesYes
Extended thinkingNoYes
Prompt cachingYesYes
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.

ProviderGpt 4o Realtime Preview 2025 06 03 inGpt 4o Realtime Preview 2025 06 03 outMinimax M2 1 Lightning inMinimax M2 1 Lightning out
Minimax——$0.300/M$2.40/M
Openai$5.00/M$20.00/M——

Frequently asked questions

Minimax M2 1 Lightning 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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Example: a multi-turn chat session

Without Mem0~128K tokens sent
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Repeated info
Old context
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