Context Window

Compare

Deepseek R1 0528 Maas vs Openai Gpt 5

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.

Deepseek

Model

Deepseek R1 0528 Maas

Tool calling

Context window

65K

65,336 tokens · ~49K words

Model page
Openai

Model

Openai Gpt 5

Image inputTool calling

Context window

300K

300,000 tokens · ~225K 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.

Deepseek R1 0528 Maas65K
Openai Gpt 5300K

Openai Gpt 5 has about 4.6× the context window of the other in this pair.

Token calculator →Memory savings →

Openai Gpt 5 has 359% more context capacity (300K vs 65K tokens). Openai Gpt 5 is 7% cheaper on input.

Quick verdicts

Short takeaways — validate with your own workloads.

  • Long document processing

    Use Openai Gpt 5. Its 300K context fits entire documents without chunking (vs 65K).

  • RAG / high-volume retrieval

    Use Openai Gpt 5. Input tokens are 7% cheaper — critical when sending large retrieved contexts.

  • Long output (reports, code files)

    Use Openai Gpt 5. Its 16K 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.

SpecDeepseek R1 0528 MaasOpenai Gpt 5
Context window65,336 tokens (65K)300,000 tokens (300K)
Max output tokens8,192 tokens (8K)16,384 tokens (16K)
Speed tierDeepBalanced
VisionNoYes
Function callingYesYes
Extended thinkingYesYes
Prompt cachingNoYes
Batch APINoNo
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.

ProviderDeepseek R1 0528 Maas inDeepseek R1 0528 Maas outOpenai Gpt 5 inOpenai Gpt 5 out
Google Vertex$1.35/M$5.40/M——
Snowflake——$1.25/M$10.00/M

Frequently asked questions

Openai Gpt 5 has a larger context window: 300K tokens vs 65K. 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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Without Mem0~128K tokens sent
Full history
Repeated info
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