GLM-5 vs Grok Code Fast 1
Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Verdict
GLM-5 leads for most workloads.
- Grok Code Fast 1 is ~5× cheaper on input tokens — the budget pick.
Based on BenchLM composite scores, July 2026.
GLM-5
63
Grok Code Fast 1
40
Verified leaderboard positions: GLM-5 #18 · Grok Code Fast 1 unranked
Pick GLM-5 if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if coding is the priority or you want the cheaper token bill.
Category Radar
Head-to-Head by Category
Category Breakdown
| Benchmark | GLM-5 | Δ | Grok Code Fast 1 |
|---|---|---|---|
| Coding | 63.3 | → 7.5 | 70.8 |
| Agentic | 56.2 | — | — |
| Reasoning | 60.8 | — | — |
| Knowledge | 66.6 | — | — |
| Math | 56.3 | — | — |
| Multilingual | 83.1 | — | — |
| Inst. Following | 92.6 | — | — |
Operational Comparison
GLM-5
Grok Code Fast 1
$1 / $3.2
$0.2 / $1.5
74 t/s
172 t/s
1.64s
2.81s
200K
256K
Quick Verdict
Pick GLM-5 if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if coding is the priority or you want the cheaper token bill.
GLM-5 is clearly ahead on the provisional aggregate, 63 to 40. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GLM-5 is also the more expensive model on tokens at $1.00 input / $3.20 output per 1M tokens, versus $0.20 input / $1.50 output per 1M tokens for Grok Code Fast 1. That is roughly 2.1x on output cost alone. Grok Code Fast 1 gives you the larger context window at 256K, compared with 200K for GLM-5.
Benchmark Deep Dive
Frequently Asked Questions (2)
Which is better, GLM-5 or Grok Code Fast 1?
GLM-5 is ahead on BenchLM's provisional leaderboard, 63 to 40. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 77.8% and 70.8%.
Which is better for coding, GLM-5 or Grok Code Fast 1?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 63.3. Inside this category, Terminal-Bench Hard is the benchmark that creates the most daylight between them.
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