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GPT-3.5 Turbo vs DeepSeek R1

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OpenAI · 16k context | DeepSeek · 64k context

Pricing Comparison

Metric	GPT-3.5 Turbo	DeepSeek R1
Input / 1M tokens	$0.5	$0.55
Output / 1M tokens	$1.5	$2.19
Cached input / 1M	—	$0.14
Context window	16k	64k
Provider	OpenAI	DeepSeek

Cost Calculator

Input tokens

Output tokens

Requests/day

💰 GPT-3.5 Turbo saves $118.50/month (24% cheaper)

OGPT-3.5 TurboCHEAPER

Per request$0.001250

Daily$12.50

Monthly$375.00

Yearly$4,562.50

DDeepSeek R1

Per request$0.001645

Daily$16.45

Monthly$493.50

Yearly$6,004.25

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Choose GPT-3.5 Turbo when…

✓ Cheaper for RAG & document retrieval (lower input cost)
✓ 9% cheaper per input token
✓ Cheaper for generation-heavy workloads (lower output cost)
✓ Optimized for: Legacy chat applications

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Choose DeepSeek R1 when…

✓ Larger context window (64k vs 16k) — better for long documents
✓ Supports prompt caching — save up to 90% on repeated prompts
✓ Optimized for: Math & logic reasoning

Related Comparisons

GPT-3.5 Turbo vs GPT-5 GPT-3.5 Turbo vs GPT-5 Mini GPT-3.5 Turbo vs GPT-4.1 GPT-3.5 Turbo vs GPT-4.1 Mini DeepSeek R1 vs GPT-5 DeepSeek R1 vs GPT-5 Mini