DeepSeek V4 vs GLM 5.3 Flash: Benchmark Comparison
DeepSeek V4 has the higher score on 6 of 17 shared benchmarks; GLM 5.3 Flash leads on 10.
The largest observed score gap is 22.11 pts on Legal Research Bench , where GLM 5.3 Flash leads.
Reported ±1 standard-error ranges overlap on 7 of 17 shared benchmarks with comparable uncertainty data. This is not a pairwise statistical significance test.
Shared benchmark results
Scores and reported standard errors come from the latest visible Vals benchmark version available for both models.
| Benchmark | DeepSeek V4 | GLM 5.3 Flash | Gap | Reported uncertainty |
|---|---|---|---|---|
| Harvey's Legal Agent Benchmark | 3.75% ±1.43 | 6.67% ±1.65 | 2.92 pts | Reported ±1 SE ranges overlap |
| Legal Research Bench | 23.08% ±2.93 | 45.19% ±3.46 | 22.11 pts | Reported ±1 SE ranges do not overlap |
| LegalBench | 80.32% ±0.47 | 83.93% ±0.43 | 3.61 pts | Reported ±1 SE ranges do not overlap |
| EMB | 51.62% ±3.05 | 55.93% ±3.56 | 4.31 pts | Reported ±1 SE ranges overlap |
| Finance Agent (v2) | 44.08% ±0.65 | 57.85% ±2.06 | 13.77 pts | Reported ±1 SE ranges do not overlap |
| Tax Agent Bench | 58.50% ±3.13 | 61.96% ±3.26 | 3.46 pts | Reported ±1 SE ranges overlap |
| TaxEval v2 | 72.08% ±0.88 | 75.59% ±0.84 | 3.52 pts | Reported ±1 SE ranges do not overlap |
| MedScribe | 75.14% ±2.00 | 88.94% ±1.91 | 13.79 pts | Reported ±1 SE ranges do not overlap |
| ProofBench v1.1 | 16.00% ±3.69 | 21.00% ±4.09 | 5.00 pts | Reported ±1 SE ranges overlap |
| GPQA Diamond | 89.39% ±1.65 | 86.36% ±2.13 | 3.03 pts | Reported ±1 SE ranges overlap |
| MMLU Pro | 87.25% ±0.34 | 86.06% ±0.34 | 1.19 pts | Reported ±1 SE ranges do not overlap |
| Code Migration | 26.20% ±4.04 | 20.52% ±4.21 | 5.69 pts | Reported ±1 SE ranges overlap |
| LiveCodeBench | 87.48% ±0.95 | 80.51% ±1.05 | 6.97 pts | Reported ±1 SE ranges do not overlap |
| ProgramBench | 0.00% ±0.00 | 0.00% ±0.00 | 0.00 pts | Reported ±1 SE ranges overlap |
| SkillsBench | 51.27% ±4.60 | 40.16% ±4.43 | 11.12 pts | Reported ±1 SE ranges do not overlap |
| SWE-bench | 77.40% ±1.87 | 92.00% ±1.21 | 14.60 pts | Reported ±1 SE ranges do not overlap |
| Vibe Code Bench v1.1 | 49.93% ±4.77 | 30.76% ±5.28 | 19.17 pts | Reported ±1 SE ranges do not overlap |
Performance by category
| Category | DeepSeek V4 average | GLM 5.3 Flash average |
|---|---|---|
| Legal | 35.72% | 45.26% |
| Finance | 56.57% | 62.83% |
| Healthcare | 75.14% | 88.94% |
| Math | 16.00% | 21.00% |
| Academic | 88.32% | 86.21% |
| Coding | 48.72% | 43.99% |
Cost and latency
Cost per test appears only where the benchmark reports it for both models. Latency is the measured completion time for that benchmark.
| Benchmark | DeepSeek V4 cost | GLM 5.3 Flash cost | DeepSeek V4 latency | GLM 5.3 Flash latency |
|---|---|---|---|---|
| Harvey's Legal Agent Benchmark | $0.74 | $0.57 | 6m42s | 52m17s |
| Legal Research Bench | $0.68 | $0.12 | 17m05s | 51m07s |
| LegalBench | N/A | N/A | 3m04s | 12.52s |
| EMB | $0.80 | $0.71 | 13m42s | 1h15m |
| Finance Agent (v2) | $0.88 | $0.05 | 25m26s | 14m51s |
| Tax Agent Bench | $0.72 | $0.14 | 20m45s | 21m37s |
| TaxEval v2 | N/A | N/A | 3m10s | 53.06s |
| MedScribe | N/A | N/A | 5m46s | 86.98s |
| ProofBench v1.1 | $0.03 | $0.22 | 7m03s | 1h11m |
| GPQA Diamond | N/A | N/A | 15m00s | 2m11s |
| MMLU Pro | N/A | N/A | 9m38s | 44.76s |
| Code Migration | $1.07 | $3.13 | 28m58s | 3h26m |
| LiveCodeBench | N/A | N/A | 11m56s | 5m02s |
| ProgramBench | N/A | N/A | 1h03m | 5h30m |
| SkillsBench | $0.40 | $0.04 | 8m16s | 12m09s |
| SWE-bench | $0.44 | $0.02 | 10m35s | 1h04m |
| Vibe Code Bench v1.1 | $2.21 | $2.35 | 56m59s | 1h24m |
Results available only for DeepSeek V4
- Vals Index
- MedCode
- Terminal-Bench 4.0
- Public Benefits Bench v1.1
Results available only for GLM 5.3 Flash
- Terminal-Bench Science
- MMMU Pro
- IOI
- Vibe Code Bench 1-100
- CyberBench v1.1