Mercury 2 vs Qwen3.5 397B A17B
API pricing, context window and capabilities for Mercury 2 and Qwen3.5 397B A17B, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersMercury 2 wins on price. Qwen3.5 397B A17B wins on coding, on intelligence and on context window.
Price
Mercury 2
Coding
Qwen3.5 397B A17B
Intelligence
Qwen3.5 397B A17B
Context window
Qwen3.5 397B A17B
Key takeaways
who wins on what, from the published numbersMercury 2 wins
- Cheaper input ($0.25 vs $0.39 /1M)
- Cheaper output ($0.75 vs $2.34 /1M)
Qwen3.5 397B A17B wins
- Larger context window (128K vs 262K)
- Higher max output (50K vs 66K)
- More serving providers (2 vs 5)
- Supports vision
- Has reasoning mode
Cheaper overall
Mercury 2
$0.25 + $0.75 /1M
Larger context
Qwen3.5 397B A17B
262K
More providers
Qwen3.5 397B A17B
5 providers
Pricing & specs
cheapest serving route · per 1M tokens| Mercury 2 | Qwen3.5 397B A17B | |
|---|---|---|
| Input $/1M | $0.25 best | $0.39 |
| Output $/1M | $0.75 best | $2.34 |
| Context window | 128K | 262K best |
| Max output | 50K | 66K best |
| Serving providers | 2 | 5 best |
| Released | 2026-02-24 | 2026-02-16 |
Benchmarks
Artificial Analysis indices, side by side| Mercury 2 | Qwen3.5 397B A17B | |
|---|---|---|
| Intelligence | 21.9 | 34.3 best |
| Coding | 31.1 | 48.2 best |
| GPQA Diamond | 77% | 89% best |
| Output speed | 939 t/s best | 90 t/s |
| Latency (TTFT) | 3.44s | 2.27s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Mercury 2
via Inception
$2.00
Qwen3.5 397B A17B
via OpenRouter
$4.29
Capabilities
feature support, side by side| Feature | Mercury 2 | Qwen3.5 397B A17B |
|---|---|---|
| Vision | — | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | — | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, Mercury 2 or Qwen3.5 397B A17B?
Mercury 2 is cheaper for input ($0.25 vs $0.39 per 1M tokens). Mercury 2 is cheaper for output ($0.75 vs $2.34 per 1M tokens).
What is the context window difference between Mercury 2 and Qwen3.5 397B A17B?
Mercury 2 has a 128K-token context window and Qwen3.5 397B A17B has 262K tokens, so Qwen3.5 397B A17B can take a larger prompt.
How do Mercury 2 and Qwen3.5 397B A17B compare on benchmarks?
On the tracked Artificial Analysis indices, Qwen3.5 397B A17B leads on coding, and Qwen3.5 397B A17B leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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