GPT-5.4 vs DeepSeek V4 Pro

Comprehensive comparison of OpenAI's GPT-5.4 and DeepSeek's DeepSeek V4 Pro. Pricing, specs, benchmarks, use cases, and recommendations.

Quick Verdict

Overall Value
DeepSeek V4 Pro
Best Context
GPT-5.4
84% cheaperBest Value
G
GPT-5.4
OpenAI
$2.50 / $15.00
D
DeepSeek V4 Pro
DeepSeek
$0.55 / $2.19

Overview

GPT-5.4 (OpenAI) and DeepSeek V4 Pro (DeepSeek) represent two different approaches to AI. GPT-5.4 is a gpt5-class model with 256K context, priced at $2.50/$15.00 per 1M tokens. DeepSeek V4 Pro is a deepseek-class model with 128K context, priced at $0.55/$2.19 per 1M tokens.

Balanced performance and cost. The recommended model for most production workloads.. DeepSeek's most capable model. Near-flagship performance at ultra-low cost. Strong in reasoning, coding, and math.. Both are available through AI API Hub with USDT and USDC payments — no credit card required.

At current pricing, using DeepSeek V4 Pro saves you approximately Save $1.95 per 1M input tokens versus the other, making it the more budget-friendly choice for high-volume applications.

Cost Calculator

GPT-5.4
$10.00
/month
DeepSeek V4 Pro
$1.65
/month
💡 DeepSeek V4 Pro saves $8.36/month (84%) vs GPT-5.4

Technical Specifications Comparison

SpecificationGPT-5.4DeepSeek V4 Pro
ProviderOpenAIDeepSeek
Release Date2026-052026-05
Context Window256K128K
Max Output Tokens16,38465,536
Input Price$2.50/1M$0.55/1M
Output Price$15.00/1M$2.19/1M
VisionYes ✓No
AudioNoNo
Function CallingYes ✓Yes ✓
JSON ModeYes ✓No
StreamingYes ✓Yes ✓
Fine TuningYes ✓No
Rate Limits10K RPM5K RPM
Statusactiveactive

Pros & Cons

GPT-5.4

Advantages
  • ✓Excellent performance
  • ✓Lower cost than 5.5
  • ✓Daily workhorse
Limitations
  • ✗Not the latest frontier
  • ✗Higher cost than DeepSeek

DeepSeek V4 Pro

Advantages
  • ✓Latest V4 flagship
  • ✓Best DeepSeek quality
  • ✓Strong reasoning & coding
  • ✓95% cheaper than GPT-5.5
Limitations
  • ✗Smaller context vs 1M models
  • ✗Less brand recognition

Benchmarks

BenchmarkGPT-5.4DeepSeek V4 Pro
MMLUN/AN/A
GPQAN/AN/A
SWE-benchN/AN/A
HumanEvalN/AN/A
GSM8KN/AN/A
MATHN/AN/A
MMMUN/AN/A
Benchmark scores are not publicly available for most models. We list official scores when published by the provider.

Best For

Use CaseGPT-5.4DeepSeek V4 Pro
Coding★★★★
AI Agents★★★★★★
Research★★★★
Writing★★★★★★
Enterprise★★★★★

Performance & Pricing Analysis

Performance: GPT-5.4 delivers excellent performance with 256K context. DeepSeek V4 Pro delivers latest v4 flagship with 128K context. Both models serve different audiences — GPT-5.4 targets excellent performance and lower cost than 5.5, while DeepSeek V4 Pro targets latest v4 flagship and best deepseek quality.

Pricing: At $2.50/$15.00 vs $0.55/$2.19 per 1M tokens, DeepSeek V4 Pro is the more affordable choice. For a typical workload of 1M requests/month at 1K tokens input and 500 tokens output, DeepSeek V4 Pro saves approximately $8.36/month.

Recommendation: Choose DeepSeek V4 Pro if you prioritize cost-efficiency. Both models are available through AI API Hub with USDT/USDC payments and instant activation. Start with $5 and access all models through one API key.

Frequently Asked Questions

What is the difference between GPT-5.4 and DeepSeek V4 Pro?

GPT-5.4 is OpenAI's gpt5 model with 256K context at $2.50/1M input. DeepSeek V4 Pro is DeepSeek's deepseek model with 128K context at $0.55/1M input. They serve different ecosystems — access both through AI API Hub with one key.

Which model is cheaper?

DeepSeek V4 Pro is cheaper at $0.55/1M input vs $2.50/1M for GPT-5.4. You save $1.95 per 1M input tokens with DeepSeek V4 Pro.

Which model is better for coding?

Coding capabilities vary by model. Check the features section above for details.

Which model has a larger context window?

GPT-5.4 has a larger context window (256K vs 128K) — $100% more capacity.

Can both models use function calling?

Yes, both GPT-5.4 and DeepSeek V4 Pro support function/tool calling. This enables building AI agents, structured data extraction, and API integrations.

How much does GPT-5.4 cost?

GPT-5.4 costs $2.50/1M input tokens and $15.00/1M output tokens with 256K context. Pay-as-you-go, no minimum. Sign up at AI API Hub and start with $5.

How much does DeepSeek V4 Pro cost?

DeepSeek V4 Pro costs $0.55/1M input tokens and $2.19/1M output tokens with 128K context. Pay-as-you-go, no minimum. Sign up at AI API Hub and start with $5.

Which model is better for enterprise use?

Neither model targets the premium enterprise tier exclusively. For enterprise needs, consider flagship models with higher quality guarantees.

Which model is better for AI agents?

Both support tool calling for AI agents. GPT-5.4 provides premium agent capabilities. DeepSeek V4 Pro offers better cost-efficiency for high-volume agent calls.

How do I access these APIs?

Access both GPT-5.4 and DeepSeek V4 Pro through AI API Hub: (1) Register at api.apiyihe.org/register?aff=8JZC, (2) Deposit USDT/USDC, (3) Get your API key, (4) Use OpenAI-compatible endpoint https://api.apiyihe.org/v1 with model names "gpt-5.4" or "deepseek-v4-pro". One API key gives access to all models.

Related Models

GPT-5.5$5.00/1MGPT-4.1$2.00/1MGPT-4.1 Mini$0.40/1MDeepSeek V4 Flash$0.27/1MDeepSeek Chat$0.27/1MDeepSeek V3.2$0.23/1M

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Access GPT-5.4 & DeepSeek V4 Pro via AI API Hub

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