DeepSeek V4 Pro 0423 vs Mercury 2
API pricing, context window and capabilities for DeepSeek V4 Pro 0423 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 0423 wins on coding, on intelligence and on context window. Mercury 2 wins on price.
Price
Mercury 2
Coding
DeepSeek V4 Pro 0423
Intelligence
DeepSeek V4 Pro 0423
Context window
DeepSeek V4 Pro 0423
Key takeaways
who wins on what, from the published numbersDeepSeek V4 Pro 0423 wins
- Larger context window (1M vs 128K)
- Higher max output (512K vs 50K)
- More serving providers (10 vs 2)
- 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 0423
1M
More providers
DeepSeek V4 Pro 0423
10 providers
Pricing & specs
cheapest serving route · per 1M tokens| DeepSeek V4 Pro 0423 | Mercury 2 | |
|---|---|---|
| Input $/1M | $0.43 | $0.25 best |
| Output $/1M | $0.87 | $0.75 best |
| Context window | 1M best | 128K |
| Max output | 512K best | 50K |
| Serving providers | 10 best | 2 |
| Released | 2026-04-24 | 2026-02-24 |
Benchmarks
Artificial Analysis indices, side by side| DeepSeek V4 Pro 0423 | Mercury 2 | |
|---|---|---|
| Intelligence | 53.2 best | 21.9 |
| Coding | 68.8 best | 31.1 |
| GPQA Diamond | 93% best | 77% |
| Output speed | 68 t/s | 939 t/s best |
| Latency (TTFT) | 1.75s best | 3.44s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
DeepSeek V4 Pro 0423
via Tencent
$3.04
Mercury 2
via Inception
$2.00
Capabilities
feature support, side by side| Feature | DeepSeek V4 Pro 0423 | Mercury 2 |
|---|---|---|
| Vision | — | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | — |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, DeepSeek V4 Pro 0423 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 0423 and Mercury 2?
DeepSeek V4 Pro 0423 has a 1M-token context window and Mercury 2 has 128K tokens, so DeepSeek V4 Pro 0423 can take a larger prompt.
How do DeepSeek V4 Pro 0423 and Mercury 2 compare on benchmarks?
On the tracked Artificial Analysis indices, DeepSeek V4 Pro 0423 leads on coding, and DeepSeek V4 Pro 0423 leads on intelligence.
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