Gemini 3.7 Flash vs GPT-6 Luna: Benchmark Comparison
Gemini 3.7 Flash has the higher score on 7 of 12 shared benchmarks; GPT-6 Luna leads on 5.
The largest observed score gap is 32.50 pts on CyberBench v1.1 , where GPT-6 Luna leads.
Reported ±1 standard-error ranges overlap on 9 of 12 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 | Gemini 3.7 Flash | GPT-6 Luna | Gap | Reported uncertainty |
|---|---|---|---|---|
| Legal Research Bench | 34.62% ±3.31 | 30.29% ±3.19 | 4.33 pts | Reported ±1 SE ranges overlap |
| Tax Agent Bench | 22.80% ±3.03 | 19.95% ±2.87 | 2.85 pts | Reported ±1 SE ranges overlap |
| MedCode | 53.39% ±2.12 | 44.69% ±2.30 | 8.70 pts | Reported ±1 SE ranges do not overlap |
| MedScribe | 83.94% ±2.00 | 83.71% ±1.95 | 0.23 pts | Reported ±1 SE ranges overlap |
| ProofBench v1.1 | 58.00% ±4.96 | 64.00% ±4.82 | 6.00 pts | Reported ±1 SE ranges overlap |
| Terminal-Bench-Science | 7.14% ±3.10 | 4.29% ±2.44 | 2.86 pts | Reported ±1 SE ranges overlap |
| IOI | 67.83% ±3.61 | 55.56% ±8.87 | 12.28 pts | Reported ±1 SE ranges overlap |
| ProgramBench | 0.00% ±0.00 | 0.50% ±0.50 | 0.50 pts | Reported ±1 SE ranges overlap |
| Terminal-Bench 4.0 | 12.12% ±3.03 | 13.64% ±1.51 | 1.51 pts | Reported ±1 SE ranges overlap |
| Vibe Code Bench v1.1 | 70.39% ±4.84 | 81.65% ±3.38 | 11.25 pts | Reported ±1 SE ranges do not overlap |
| CyberBench v1.1 | 43.75% ±2.21 | 76.25% ±5.29 | 32.50 pts | Reported ±1 SE ranges do not overlap |
| SRE Bench | 4.58% ±1.29 | 2.67% ±1.00 | 1.91 pts | Reported ±1 SE ranges overlap |
Performance by category
| Category | Gemini 3.7 Flash average | GPT-6 Luna average |
|---|---|---|
| Legal | 34.62% | 30.29% |
| Finance | 22.80% | 19.95% |
| Healthcare | 68.67% | 64.20% |
| Math | 58.00% | 64.00% |
| Science | 7.14% | 4.29% |
| Coding | 37.59% | 37.84% |
| Cyber | 24.16% | 39.46% |
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 | Gemini 3.7 Flash cost | GPT-6 Luna cost | Gemini 3.7 Flash latency | GPT-6 Luna latency |
|---|---|---|---|---|
| Legal Research Bench | $0.76 | $0.44 | 4m49s | 42m28s |
| Tax Agent Bench | $0.48 | $0.19 | 87.24s | 33m16s |
| MedCode | N/A | N/A | 9.16s | 108.77s |
| MedScribe | N/A | N/A | 16.82s | 2m50s |
| ProofBench v1.1 | $0.56 | $0.04 | 7m04s | 7m31s |
| Terminal-Bench-Science | $7.19 | $0.24 | 1h20m | 1h16m |
| IOI | $3.40 | $0.20 | 21m09s | 35m47s |
| ProgramBench | $7.13 | $0.18 | 21m30s | 28m55s |
| Terminal-Bench 4.0 | $8.71 | $0.35 | 1h24m | 32m46s |
| Vibe Code Bench v1.1 | $4.83 | $1.35 | 23m43s | 37m00s |
| CyberBench v1.1 | $2.15 | $0.13 | 7m34s | 15m50s |
| SRE Bench | $21.47 | $1.55 | 1h50m | 1h21m |
Results available only for Gemini 3.7 Flash
- Vals RSI Index
- LegalBench
- MortgageTax
- TaxEval v2
- GPQA Diamond
- MMLU Pro
- MMMU Pro
- LiveCodeBench
- SkillsBench
- SWE-bench
Results available only for GPT-6 Luna
- Vals Index
- Vals Finance Index
- Vals Legal Index
- Vals Science Index
- HLAB-Vals-1.1
- Immigration
- ClaimBench
- EMB v1.1
- Finance Agent v2.1
- BioMysteryBench
- MysteryMechanism
- SAGE
- Code Migration v1.1
- SWE-bench Multimodal
- Public Benefits Bench v1.1