Model comparison
Gemini 2.5 Flash vs GLM-4.6
Head-to-head evidence from 13 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 2.5 Flash #130 (Supported); GLM-4.6 #85 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 2.5 Flash and GLM-4.6 share 13 comparable benchmark results. 1 of 8 categories are comparable. 2 results are unique to Gemini 2.5 Flash; 1 to GLM-4.6.
Updated July 23, 2026- Shared results
- 13
- Gemini 2.5 Flash only
- 2
- GLM-4.6 only
- 1
- Comparable categories
- 1 / 8
Pick GLM-4.6 if you want the stronger benchmark profile. Gemini 2.5 Flash only becomes the better choice if mathematics is the priority or you need the larger 1M context window.
Confidence note. This is a partial-evidence comparison with 13 shared benchmark results across 6 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
GLM-4.6 is clearly ahead on the BenchAlign aggregate, 55.12 to 48.09. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GLM-4.6 is the reasoning model in the pair, while Gemini 2.5 Flash is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Gemini 2.5 Flash gives you the larger context window at 1M, compared with 200K for GLM-4.6.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Gemini 2.5 Flash | Δ | GLM-4.6 |
|---|---|---|---|
| Math | Gemini 2.5 Flash4.7 | Margin← 1.3 | GLM-4.63.4 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tier 4)
MathA 4.167%B 2.128%Winner: Gemini 2.5 FlashΔ 2FrontierMath v2 (Tier 4): Gemini 2.5 Flash scored 4.167%; GLM-4.6 scored 2.128%. Gemini 2.5 Flash wins this benchmark. - Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 4.844%B 3.819%Winner: Gemini 2.5 FlashΔ 1FrontierMath v2 (Tiers 1-3): Gemini 2.5 Flash scored 4.844%; GLM-4.6 scored 3.819%. Gemini 2.5 Flash wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 2.5 Flash | GLM-4.6 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 2.5 Flash$0.3 input / $2.5 output | GLM-4.6Not available | A complete price comparison is not available. |
| Generation speedtokens per second | Gemini 2.5 Flash221 tok/s | GLM-4.6Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 2.5 Flash0.50 s | GLM-4.6Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 2.5 Flash1M | GLM-4.6200K | Gemini 2.5 Flash lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Gemini 2.5 Flash | GLM-4.6 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 14.9% | 76.9% | GLM-4.6 leads |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Gemini 2.5 Flash | GLM-4.6 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 14.1% | 23.0% | GLM-4.6 leads |
| AA-GPQA DiamondSource | 68.3% | 63.2% | Gemini 2.5 Flash leads |
| AA-HLESource | 5.1% | 5.2% | GLM-4.6 leads |
| AA-Omniscience IndexSource | -42.0% | -31.6% | GLM-4.6 leads |
| AA-Omniscience AccuracySource | 26.5% | 20.8% | Gemini 2.5 Flash leads |
| AA-Omniscience Hallucination RateSource | 93.3% | 66.1% | GLM-4.6 leads |
MathGemini 2.5 Flash wins2 benchmarks
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Gemini 2.5 Flash | GLM-4.6 | Result |
|---|---|---|---|
| AA-IFBenchSource | 39.0% | 36.7% | Gemini 2.5 Flash leads |
Frequently Asked Questions (2)
Which is better, Gemini 2.5 Flash or GLM-4.6?
GLM-4.6 is ahead on BenchLM's BenchAlign leaderboard, 55.12 to 48.09. The biggest single separator in this matchup is FrontierMath v2 (Tier 4), where the scores are 4.167% and 2.128%.
Which is better for math, Gemini 2.5 Flash or GLM-4.6?
Gemini 2.5 Flash has the edge for math in this comparison, averaging 4.7 versus 3.4. Inside this category, FrontierMath v2 (Tier 4) is the benchmark that creates the most daylight between them.
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.