The question that matters: “In what situation will I regret choosing A over B after 3 months?”
Scenario: Derivative Pricing Calculated and Audited
DeepSeek
Derivative Pricing Calculated and Audited Step-by-Step
Chain-of-thought reasoning solves multi-step financial models in spreadsheet via API. Open-source architecture lets compliance teams audit exactly how each answer was reached.
GPT-4o
Scanned Invoices and Contracts Audited via Vision in Batch
Vision extracts tables, signatures, and handwritten annotations across thousands of scanned documents. The 128K context loads full multi-page PDFs alongside comparison datasets.
Scenario: 50K Daily Inferences at $0.14
DeepSeek
50K Daily Inferences at $0.14 per Million Tokens
Run on local infrastructure for high-volume APIs. At $0.14/million tokens versus $15 for LLM, startups process millions of queries monthly without vendor lock-in.
GPT-4o
500 Voicemail Files Converted to Structured JSON Daily
Native audio input converts voicemails and call recordings directly to searchable JSON via JSON mode. Function calling routes issues to departments automatically - no transcription.
DeepSeek Unique Strength
PDF Contracts with Embedded Charts Parsed Inside internal wiki
Multimodal feature parses documents containing tables and images within internal wiki. Liability clauses and compliance gaps extract with visual context - no separate image-to-text.
→ Choose DeepSeek if this scenario applies to you. GPT-4o doesn't offer a comparable solution.
GPT-4o Unique Strength
API Clients Auto-Generated from REST Endpoint Screenshots
Feed documentation screenshots through Vision; Function calling generates typed Python, TypeScript, or Go client libraries. API integration drops from days to hours.
→ Choose GPT-4o if this scenario applies to you. DeepSeek doesn't offer a comparable solution.
Pricing Intelligence
DeepSeek Plans
Free tier available
Free0
Free
You get basic access. Good enough for solo use and evaluation.
API
Custom
Custom pricing for SSO, SLA, dedicated support. Always negotiate - ask for pilot pricing if testing with <50 seats, and push for annual discount commitments. Compare enterprise quotes against OpenAI API's equivalent tier.
You get GPT-4o limited, Basic features. What's locked behind the paywall: gpt-4o full access, dall-e 3, advanced analysis. If those matter, Plus at $20/month is the next step. Good enough for solo use and evaluation.
PlusBest Value
$20/month
$20/month gets you GPT-4o full access, DALL-E 3, Advanced analysis. The sweet spot for professionals who've maxed out the free plan and need GPT-4o full access, DALL-E 3.
Team
$30/month
$30/month gets you Higher limits, Admin console. 50% more than Plus - justified only if you need the extras.
API Token Pricing
GPT-4o (API)
In: $2.5Out: $10/1M tokens
API pricing. Subscription available via ChatGPT Plus ($20/mo).