Data points: 109
Model compare
The readout for Gemini 3 Flash and GPT-5, before the detailed comparison sheet.
Weighted outcome: Tie. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Tie
Tie has the higher weighted result; Model A / B score 50 to 50.
Evidence depth
109 data points
Includes 22 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Tie
The charts below split 28 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for Gemini 3 Flash and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 3 Flash | GPT-5 |
|---|---|---|
| Overall leader | Tie | Tie |
| Weighted overall score | 50.0 pts | 50.0 pts |
| Benchmark category leads | 3 categories | 3 categories |
| Operational advantages | Average speed, Provider coverage | First-token latency, Free providers |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 65.5K tokens | 128K tokens |
| Modalities | Input TextImageFileAudiovideo |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Gemini 3 Flash | GPT-5 |
|---|---|---|
| Developer | OpenAI | |
| Released | Dec 2025 | Aug 2025 |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | No data | 2024-09-30 |
| OpenRouter ID | google/gemini-3-flash-preview | openai/gpt-5 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 3 Flash and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 3 Flash
Gemini 3 Flash is stronger in benchmark categories (Coding, Reasoning, Knowledge) and operational dimensions (Average speed, Provider coverage).
GPT-5
GPT-5 is stronger in benchmark categories (Agents, Math, Instruction following) and operational dimensions (First-token latency, Free providers).
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Gemini 3 Flash
50.1
Avg. score
GPT-5
51.9
GPT-5 leads by 2.8
Gemini 3 Flash leads by 4.9
Gemini 3 Flash leads by 0.5
Gemini 3 Flash leads by 1.6
GPT-5 leads by 9.7
No data
No data
GPT-5 leads by 5.1
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 3 Flash
winner$0.500/M
Rank #69/162 · confidence 4
GPT-5
$1.25/M
Rank #107/162 · confidence 4
Gemini 3 Flash
winner$1.13/M
Rank #81/162 · confidence 4
GPT-5
$3.44/M
Rank #117/162 · confidence 4
Gemini 3 Flash
winner$3.00/M
Rank #85/162 · confidence 4
GPT-5
$10.00/M
Rank #120/162 · confidence 4
Gemini 3 Flash
48.0
Rank #68/89 · confidence 1 · eval date 2025-12-01
GPT-5
winner75.6
Rank #2/89 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner88.2%
Rank #7/125 · confidence 4
GPT-5
80.6%
Rank #57/125 · confidence 4
Gemini 3 Flash
1.4
Rank #50/73 · confidence 1 · eval date 2025-12-01
GPT-5
winner5.7
Rank #30/73 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner81.2%
Rank #72/188 · confidence 4
GPT-5
67.3%
Rank #121/188 · confidence 4
Gemini 3 Flash
winner14.1%
Rank #76/187 · confidence 4
GPT-5
5.4%
Rank #132/187 · confidence 4
Gemini 3 Flash
winner49.9%
Rank #18/185 · confidence 4
GPT-5
38.8%
Rank #83/185 · confidence 4
Gemini 3 Flash
winner79.7%
Rank #19/115 · confidence 4
GPT-5
55.8%
Rank #49/115 · confidence 4
Gemini 3 Flash
winner20.2
Rank #21/33 · confidence 1 · eval date 2025-12-01
GPT-5
20.1
Rank #22/33 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner49.9
Rank #23/96 · confidence 1 · eval date 2025-12-01
GPT-5
42.9
Rank #46/96 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner90.2
Rank #11/90 · confidence 1 · eval date 2025-12-01
GPT-5
82.1
Rank #31/90 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner45.5
Rank #14/90 · confidence 1 · eval date 2025-12-01
GPT-5
40.7
Rank #20/90 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
14.1
Rank #62/96 · confidence 1 · eval date 2025-12-01
GPT-5
winner26.5
Rank #39/96 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
81.2
Rank #59/96 · confidence 1 · eval date 2025-12-01
GPT-5
winner85.4
Rank #45/96 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
27.4
Rank #62/99 · confidence 1 · eval date 2025-12-01
GPT-5
winner34.7
Rank #48/99 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner78.6
Rank #12/57 · confidence 1 · eval date 2025-12-01
GPT-5
74.2
Rank #32/57 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner1221.0
Rank #34/66 · confidence 1 · eval date 2025-12-01
GPT-5
1209.0
Rank #40/66 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
55.1
Rank #56/86 · confidence 1 · eval date 2025-12-01
GPT-5
winner73.1
Rank #29/86 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
winner11.4
Rank #17/20 · confidence 1 · eval date 2025-12-01
GPT-5
8.5
Rank #20/20 · confidence 1 · eval date 2025-08-07
Gemini 3 Flash
43.3
Rank #70/84 · confidence 1 · eval date 2025-12-01
GPT-5
winner84.8
Rank #44/84 · confidence 1 · eval date 2025-08-07
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3 Flash | GPT-5 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 3 Flash | GPT-5 |
|---|---|---|
35 tests | Gemini 3 Flash speed / latency 129 tok/s / 10293ms input / output No data | GPT-5 speed / latency 45 tok/s / 3704ms input / output No data |
25 tests | Gemini 3 Flash speed / latency 157 tok/s / 7994ms input / output No data | GPT-5 speed / latency 102 tok/s / 948ms input / output No data |
20 tests | Gemini 3 Flash speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 95 tok/s / 1234ms input / output No data |
10 tests | Gemini 3 Flash speed / latency 118 tok/s / 9594ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
10 tests | Gemini 3 Flash speed / latency 160 tok/s / 6933ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
Gemini 3 Flash gemini-3-flash-preview-all speed / latency No data input / output $0/request | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0/request |
Weighted outcome: Tie. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
