DeepSeek V4 Pro vs Mercury 2
API pricing, context window and capabilities for DeepSeek V4 Pro and Mercury 2, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersDeepSeek V4 Pro wins on intelligence and on context window. Mercury 2 wins on price. Benchmark data is unavailable for one or both models.
Price
Mercury 2
Coding
Not called
Intelligence
DeepSeek V4 Pro
Context window
DeepSeek V4 Pro
Key takeaways
who wins on what, from the published numbersDeepSeek V4 Pro wins
- Larger context window (1M vs 128K)
- Higher max output (384K vs 50K)
- More serving providers (4 vs 1)
- Has reasoning mode
Mercury 2 wins
- Cheaper input ($0.43 vs $0.25 /1M)
- Cheaper output ($0.87 vs $0.75 /1M)
Cheaper overall
Mercury 2
$0.25 + $0.75 /1M
Larger context
DeepSeek V4 Pro
1M
More providers
DeepSeek V4 Pro
4 providers
Pricing & specs
cheapest serving route · per 1M tokens| DeepSeek V4 Pro | Mercury 2 | |
|---|---|---|
| Input $/1M | $0.43 | $0.25 best |
| Output $/1M | $0.87 | $0.75 best |
| Context window | 1M best | 128K |
| Max output | 384K best | 50K |
| Serving providers | 4 best | 1 |
| Released | 2026-04-24 | 2026-02-24 |
Benchmarks
Artificial Analysis indices, side by side| DeepSeek V4 Pro | Mercury 2 | |
|---|---|---|
| Intelligence | 44.3 best | 25.3 |
| Coding | 59.4 | Not available |
| GPQA Diamond | 89% best | 77% |
| Output speed | 75 t/s | 602 t/s best |
| Latency (TTFT) | 7.80s | 2.73s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
DeepSeek V4 Pro
via Tencent
$3.04
Mercury 2
via Inception
$2.00
Capabilities
feature support, side by side| Feature | DeepSeek V4 Pro | Mercury 2 |
|---|---|---|
| Vision | — | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | — |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, DeepSeek V4 Pro or Mercury 2?
Mercury 2 is cheaper for input ($0.43 vs $0.25 per 1M tokens). Mercury 2 is cheaper for output ($0.87 vs $0.75 per 1M tokens).
What is the context window difference between DeepSeek V4 Pro and Mercury 2?
DeepSeek V4 Pro has a 1M-token context window and Mercury 2 has 128K tokens, so DeepSeek V4 Pro can take a larger prompt.
How do DeepSeek V4 Pro and Mercury 2 compare on benchmarks?
On the tracked Artificial Analysis indices, DeepSeek V4 Pro leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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