DeepSeek V4 Pro vs Llama 3.1 405B
DeepSeek V4 Pro vs Llama 3.1 405B: DeepSeek V4 Pro is cheaper for input-heavy usage ($0.435/M vs $3.50/M input tokens), while DeepSeek V4 Pro is better for long-context tasks (1,000,000 tokens).
Direct answer: choose DeepSeek V4 Pro for lower token spend and choose DeepSeek V4 Pro when your workload needs longer context.
Common pricing searches covered on this page: DeepSeek V4 Pro vs Llama 3.1 405B • DeepSeek V4 Pro vs Llama 3.1 405B pricing • DeepSeek V4 Pro vs Llama 3.1 405B API pricing and v4 pro vs 3 1 405b pricing.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
DeepSeek V4 Pro
Llama 3.1 405B
Cost Differences
Llama 3.1 405B costs more than DeepSeek V4 Pro
Quick Recommendation
Winner for direct API pricing: DeepSeek V4 Pro. At the default workload, DeepSeek V4 Pro saves about $13.14/month ($159.87/year) versus Llama 3.1 405B.
Feature Comparison
| Feature | DeepSeek V4 Pro | Llama 3.1 405B |
|---|---|---|
| Provider | DeepSeek | Meta (via Together AI) |
| Input Price | $0.435/1M tokens | $3.50/1M tokens |
| Output Price | $0.87/1M tokens | $3.50/1M tokens |
| Context Window | 1,000,000 tokens | 128,000 tokens |
| Max Output | 384,000 tokens | 32,768 tokens |
| Category | flagship | flagship |
| Capabilities | textcodereasoning | textcodereasoning |
| Release Date | 4/24/2026 | 7/23/2024 |
DeepSeek V4 Pro vs Llama 3.1 405B: Which Should You Choose?
Choosing between DeepSeek V4 Pro and Llama 3.1 405B depends on your priorities: cost efficiency, context length, or raw capability. DeepSeek V4 Pro is the more affordable option at $0.435/1M input tokens — 88% cheaper than Llama 3.1 405B. Meanwhile, DeepSeek V4 Pro offers a significantly larger context window at 1,000,000 tokens vs 128,000 for Llama 3.1 405B.
These models come from different providers — DeepSeek and Meta (via Together AI) — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with DeepSeek, switching to Meta (via Together AI)involves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the flagship category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: DeepSeek V4 Pro would save you roughly $1,314.00/month compared to Llama 3.1 405B. For startups and indie developers, that difference can be significant.
Output costs matter too. DeepSeek V4 Pro charges $0.87/1M output tokens vs $3.50 for Llama 3.1 405B. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. DeepSeek V4 Pro has the edge here at $0.87/1M output tokens.
Best Use Cases
Choose DeepSeek V4 Pro when:
- • Budget is a primary concern
- • You need a larger context window (1,000,000 tokens)
- • You need longer outputs (up to 384,000 tokens)
- • You're already using DeepSeek's API ecosystem
Choose Llama 3.1 405B when:
- • You're already using Meta (via Together AI)'s API ecosystem
Pros and Caveats at a Glance
DeepSeek V4 Pro
- • Input pricing: $0.435/M tokens
- • Output pricing: $0.87/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 384,000 tokens
Watch out for
- • Trade-offs are minor in this matchup.
Llama 3.1 405B
- • Input pricing: $3.50/M tokens
- • Output pricing: $3.50/M tokens
- • Context window: 128,000 tokens
- • Max output: 32,768 tokens
Watch out for
- • Higher input cost than DeepSeek V4 Pro
- • Higher output cost than DeepSeek V4 Pro
- • Smaller context window than DeepSeek V4 Pro
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
DeepSeek V4 Pro (DeepSeek)
Llama 3.1 405B (Meta (via Together AI))
Start using DeepSeek V4 Pro today
Sign Up for DeepSeek →Start using Llama 3.1 405B today
Sign Up for Meta (via Together AI) →Frequently Asked Questions
Which is cheaper, DeepSeek V4 Pro or Llama 3.1 405B?▼
What is the context window difference between DeepSeek V4 Pro and Llama 3.1 405B?▼
Which model is better for AI Agent / Agentic Workflows?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare DeepSeek and Meta (via Together AI) API pricing beyond this model matchup?▼
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