Verdict
computed from the published numbersGLM 5.2 wins on coding, on intelligence and on context window. Mercury 2 wins on price.
Price
Mercury 2
Coding
GLM 5.2
Intelligence
GLM 5.2
Context window
GLM 5.2
Key takeaways
who wins on what, from the published numbersGLM 5.2 wins
- Larger context window (1M vs 128K)
- Higher max output (1M vs 50K)
- More serving providers (10 vs 2)
- Has reasoning mode
Mercury 2 wins
- Cheaper input ($0.61 vs $0.25 /1M)
- Cheaper output ($1.98 vs $0.75 /1M)
Cheaper overall
Mercury 2
$0.25 + $0.75 /1M
Larger context
GLM 5.2
1M
More providers
GLM 5.2
10 providers
Pricing & specs
cheapest serving route · per 1M tokens| GLM 5.2 | Mercury 2 | |
|---|---|---|
| Input $/1M | $0.61 | $0.25 best |
| Output $/1M | $1.98 | $0.75 best |
| Context window | 1M best | 128K |
| Max output | 1M best | 50K |
| Serving providers | 10 best | 2 |
| Released | 2026-06-13 | 2026-02-24 |
Benchmarks
Artificial Analysis indices, side by side| GLM 5.2 | Mercury 2 | |
|---|---|---|
| Intelligence | 52.6 best | 21.9 |
| Coding | 68.8 best | 31.1 |
| GPQA Diamond | 89% best | 77% |
| Output speed | 70 t/s | 939 t/s best |
| Latency (TTFT) | 1.56s best | 3.44s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GLM 5.2
via Scx AI
$5.03
Mercury 2
via Inception
$2.00
Capabilities
feature support, side by side| Feature | GLM 5.2 | Mercury 2 |
|---|---|---|
| Vision | — | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | — |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, GLM 5.2 or Mercury 2?
Mercury 2 is cheaper for input ($0.61 vs $0.25 per 1M tokens). Mercury 2 is cheaper for output ($1.98 vs $0.75 per 1M tokens).
What is the context window difference between GLM 5.2 and Mercury 2?
GLM 5.2 has a 1M-token context window and Mercury 2 has 128K tokens, so GLM 5.2 can take a larger prompt.
How do GLM 5.2 and Mercury 2 compare on benchmarks?
On the tracked Artificial Analysis indices, GLM 5.2 leads on coding, and GLM 5.2 leads on intelligence.
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