Model comparison
GLM-5V-Turbo vs Grok 4 Fast (Reasoning)
Head-to-head evidence from 12 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GLM-5V-Turbo #39 (Supported); Grok 4 Fast (Reasoning) #76 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GLM-5V-Turbo and Grok 4 Fast (Reasoning) share 12 comparable benchmark results. 0 of 8 categories are comparable. 3 results are unique to GLM-5V-Turbo; 1 to Grok 4 Fast (Reasoning).
Updated July 23, 2026- Shared results
- 12
- GLM-5V-Turbo only
- 3
- Grok 4 Fast (Reasoning) only
- 1
- Comparable categories
- 0 / 8
Benchmark data for GLM-5V-Turbo and Grok 4 Fast (Reasoning) is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 12 shared benchmark results across 6 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Grok 4 Fast (Reasoning) has the larger context window at 2M, compared with 200K for GLM-5V-Turbo.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GLM-5V-Turbo | Grok 4 Fast (Reasoning) | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GLM-5V-Turbo$1.2 input / $4 output | Grok 4 Fast (Reasoning)Not available | A complete price comparison is not available. |
| Generation speedtokens per second | GLM-5V-TurboNot available | Grok 4 Fast (Reasoning)Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GLM-5V-TurboNot available | Grok 4 Fast (Reasoning)Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GLM-5V-Turbo200K | Grok 4 Fast (Reasoning)2M | Grok 4 Fast (Reasoning) lists the larger context window. |
Benchmark Deep Dive
Agentic3 benchmarks
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | GLM-5V-Turbo | Grok 4 Fast (Reasoning) | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 34.5% | 27.4% | GLM-5V-Turbo leads |
| AA-GPQA DiamondSource | 80.9% | 84.7% | Grok 4 Fast (Reasoning) leads |
| AA-HLESource | 15.8% | 17.0% | Grok 4 Fast (Reasoning) leads |
| AA-Omniscience IndexSource | -19.0% | -28.4% | GLM-5V-Turbo leads |
| AA-Omniscience AccuracySource | 29.1% | 22.6% | GLM-5V-Turbo leads |
| AA-Omniscience Hallucination RateSource | 67.9% | 66.0% | Grok 4 Fast (Reasoning) leads |
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | GLM-5V-Turbo | Grok 4 Fast (Reasoning) | Result |
|---|---|---|---|
| AA-IFBenchSource | 61.1% | 50.5% | GLM-5V-Turbo leads |
Frequently Asked Questions (3)
Can I compare GLM-5V-Turbo and Grok 4 Fast (Reasoning) on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for GLM-5V-Turbo and Grok 4 Fast (Reasoning) today?
GLM-5V-Turbo: $1.20 input / $4.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
Related Comparisons
Explore More
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.