Context Window

Compare

Gpt 5 2 Chat Latest vs MiniMax M2.5 (free)

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 5 2 Chat Latest

Image inputTool calling

Context window

128K

128,000 tokens · ~96K words

Model page
Minimax

Model

MiniMax M2.5 (free)

Tool calling

Context window

197K

196,608 tokens · ~147K 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 5 2 Chat Latest128K
MiniMax M2.5 (free)197K

MiniMax M2.5 (free) has about 1.5× the context window of the other in this pair.

Token calculator →Memory savings →

MiniMax M2.5 (free) has 53% more context capacity (196K vs 128K tokens).

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use MiniMax M2.5 (free). Its 196K context fits entire documents without chunking (vs 128K).

  • Long output (reports, code files)

    Use MiniMax M2.5 (free). Its 196K 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 5 2 Chat LatestMiniMax M2.5 (free)
Context window128,000 tokens (128K)196,608 tokens (196K)
Max output tokens16,384 tokens (16K)196,608 tokens (196K)
Speed tierBalancedFast
VisionYesNo
Function callingYesYes
Extended thinkingYesYes
Prompt cachingYesNo
Batch APINoNo
Release dateN/AFeb 2026

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 5 2 Chat Latest inGpt 5 2 Chat Latest outMiniMax M2.5 (free) inMiniMax M2.5 (free) out
Openai$1.75/M$14.00/M——

Frequently asked questions

MiniMax M2.5 (free) has a larger context window: 196K 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.

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