Verdict
computed from the published numbersGLM 5.1 wins on coding and on intelligence. Grok 4.3 wins on context window.
Price
Tied
Coding
GLM 5.1
Intelligence
GLM 5.1
Context window
Grok 4.3
Key takeaways
who wins on what, from the published numbersGLM 5.1 wins
- Cheaper input ($1.05 vs $1.25 /1M)
- More serving providers (5 vs 3)
Grok 4.3 wins
- Cheaper output ($3.50 vs $2.50 /1M)
- Larger context window (205K vs 1M)
- Higher max output (131K vs 1M)
- Supports vision
- Has web search
Cheaper overall
Grok 4.3
$1.25 + $2.50 /1M
Larger context
Grok 4.3
1M
More providers
GLM 5.1
5 providers
Pricing & specs
cheapest serving route · per 1M tokens| GLM 5.1 | Grok 4.3 | |
|---|---|---|
| Input $/1M | $1.05 best | $1.25 |
| Output $/1M | $3.50 | $2.50 best |
| Context window | 205K | 1M best |
| Max output | 131K | 1M best |
| Serving providers | 5 best | 3 |
| Released | 2026-04-07 | 2026-04-18 |
Benchmarks
Artificial Analysis indices, side by side| GLM 5.1 | Grok 4.3 | |
|---|---|---|
| Intelligence | 41.0 best | 38.0 |
| Coding | 55.8 best | 42.3 |
| GPQA Diamond | 87% | 90% best |
| Output speed | 56 t/s | 123 t/s best |
| Latency (TTFT) | 1.71s best | 21.45s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GLM 5.1
via DeepInfra
$8.75
Grok 4.3
via Azure
$8.75
Capabilities
feature support, side by side| Feature | GLM 5.1 | Grok 4.3 |
|---|---|---|
| Vision | — | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, GLM 5.1 or Grok 4.3?
GLM 5.1 is cheaper for input ($1.05 vs $1.25 per 1M tokens). Grok 4.3 is cheaper for output ($3.50 vs $2.50 per 1M tokens).
What is the context window difference between GLM 5.1 and Grok 4.3?
GLM 5.1 has a 205K-token context window and Grok 4.3 has 1M tokens, so Grok 4.3 can take a larger prompt.
How do GLM 5.1 and Grok 4.3 compare on benchmarks?
On the tracked Artificial Analysis indices, GLM 5.1 leads on coding, and GLM 5.1 leads on intelligence.
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