Grok 4 20 Non Reasoning vs Mercury 2
API pricing, context window and capabilities for Grok 4 20 Non Reasoning 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 numbersGrok 4 20 Non Reasoning wins on context window. Mercury 2 wins on price and on intelligence. Benchmark data is unavailable for one or both models.
Price
Mercury 2
Coding
Not called
Intelligence
Mercury 2
Context window
Grok 4 20 Non Reasoning
Key takeaways
who wins on what, from the published numbersGrok 4 20 Non Reasoning wins
- Larger context window (2M vs 128K)
- Higher max output (2M vs 50K)
- Supports vision
- Has web search
Mercury 2 wins
- Cheaper input ($2.00 vs $0.25 /1M)
- Cheaper output ($6.00 vs $0.75 /1M)
- Supports prompt caching
Cheaper overall
Mercury 2
$0.25 + $0.75 /1M
Larger context
Grok 4 20 Non Reasoning
2M
More providers
Tied
Pricing & specs
cheapest serving route · per 1M tokens| Grok 4 20 Non Reasoning | Mercury 2 | |
|---|---|---|
| Input $/1M | $2.00 | $0.25 best |
| Output $/1M | $6.00 | $0.75 best |
| Context window | 2M best | 128K |
| Max output | 2M best | 50K |
| Serving providers | 1 | 1 |
| Released | 2026-03-09 | 2026-02-24 |
Benchmarks
Artificial Analysis indices, side by side| Grok 4 20 Non Reasoning | Mercury 2 | |
|---|---|---|
| Intelligence | 21.8 | 25.3 best |
| GPQA Diamond | 78% best | 77% |
| Output speed | 163 t/s | 602 t/s best |
| Latency (TTFT) | 4.54s | 2.73s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Grok 4 20 Non Reasoning
via Vertex AI
$16
Mercury 2
via Inception
$2.00
Capabilities
feature support, side by side| Feature | Grok 4 20 Non Reasoning | Mercury 2 |
|---|---|---|
| Vision | ✓ | — |
| Tool use | ✓ | ✓ |
| Reasoning | — | — |
| Audio | — | — |
| Prompt caching | — | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Grok 4 20 Non Reasoning or Mercury 2?
Mercury 2 is cheaper for input ($2.00 vs $0.25 per 1M tokens). Mercury 2 is cheaper for output ($6.00 vs $0.75 per 1M tokens).
What is the context window difference between Grok 4 20 Non Reasoning and Mercury 2?
Grok 4 20 Non Reasoning has a 2M-token context window and Mercury 2 has 128K tokens, so Grok 4 20 Non Reasoning can take a larger prompt.
How do Grok 4 20 Non Reasoning and Mercury 2 compare on benchmarks?
On the tracked Artificial Analysis indices, Mercury 2 leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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