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DeepSeek V4 vs GPT-5.4

Comprehensive comparison between DeepSeek's DeepSeek V4 and OpenAI's GPT-5.4. Compare pricing, performance, features, and user reviews.

deepseek v4 vs gptdeepseek vs openaibest open source llm 2026

DeepSeek V4

DeepSeek

DeepSeek's trillion-parameter MoE model with only 32B active parameters. 1M context window, native multimodal (text/image/video), and API pricing at ~1/20th of GPT-5. The fastest adopted open-source model in history, capturing 6% global market share within months.

$0.14/$0.28per M tokens
Details

GPT-5.4

OpenAI

OpenAI's most capable and efficient frontier model for professional work. Combines industry-leading coding with native computer use, 1M+ context window, and improved reasoning. First GPT model to beat human performance on desktop navigation tasks.

$2.5/$15per M tokens
Details

Specs Comparison

SpecificationDeepSeek V4GPT-5.4
Context Window1000K1050K
Max Output66K128K
Input (per 1M tokens)$0.14$2.50
Output (per 1M tokens)$0.28$15.00
Reasoning
Open Source

Scenario Score Comparison

Coding
—
vs
94
Writing
—
vs
93

DeepSeek V4

Pros

  • + 1M token context window
  • + Native multimodal (text/image/video)
  • + Price 1/20th of proprietary models
  • + Open-source & self-hostable
  • + Matches frontier model performance

Cons

  • − Servers in China (latency for overseas users)
  • − Geopolitical supply chain concerns
  • − Self-hosting requires significant hardware

GPT-5.4

Pros

  • + 1M+ context window (largest in GPT lineup)
  • + Native computer use capability
  • + 33% fewer hallucinations vs GPT-5.2
  • + Tool search reduces tokens by 47%
  • + Half the price of Claude Opus 4.6

Cons

  • − 2x pricing above 272K tokens
  • − 24% longer average responses (more output tokens)
  • − Health benchmarks slightly worse than 5.2
  • − Some users report benchmark-optimized feel

Recommendation

Choose DeepSeek V4 if you:

  • • Need 1m token context window
  • • Need native multimodal (text/image/video)
  • • Need price 1/20th of proprietary models

Choose GPT-5.4 if you:

  • • Need 1m+ context window (largest in gpt lineup)
  • • Need native computer use capability
  • • Need 33% fewer hallucinations vs gpt-5.2

Based on scores across 2 scenarios, GPT-5.4 performs better overall.

DeepSeek V4 Details GPT-5.4 Details

Get Started with DeepSeek V4

1Visit the provider's website
2Create an account
3Start using the model

Get Started with GPT-5.4

1Sign up at chat.openai.com
2Choose Plus ($20/mo) or Pro ($200/mo)
3Select GPT-5.4 in model picker

💡 Pro plan offers higher rate limits and priority access.

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