Data points: 71
Model compare
The readout for Gemini 1.5 Flash and GPT-4o, before the detailed comparison sheet.
Weighted outcome: GPT-4o. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-4o
GPT-4o has the higher weighted result; Model A / B score 34.7 to 65.3.
Evidence depth
71 data points
Includes 7 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with GPT-4o
The charts below split 13 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 1.5 Flash and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 1.5 Flash | GPT-4o |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 34.7 pts | 65.3 pts |
| Benchmark category leads | 1 categories | 2 categories |
| Operational advantages | Average speed, First-token latency | Cheapest input price, Free providers, Provider coverage |
| Context window | No data | 128K tokens |
| Max output | No data | 16.4K tokens |
| Modalities | No data | Input TextImageFile Output Text |
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 1.5 Flash | GPT-4o |
|---|---|---|
| Developer | OpenAI | |
| Released | No data | Nov 2024 |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | No data | openai/gpt-4o |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 1.5 Flash and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 1.5 Flash
Gemini 1.5 Flash is stronger in benchmark categories (Math) and operational dimensions (Average speed, First-token latency).
GPT-4o
GPT-4o is stronger in benchmark categories (Coding, Reasoning) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
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 1.5 Flash
37.7
Avg. score
GPT-4o
43.2
GPT-4o
GPT-4o leads by 13.1
GPT-4o leads by 3.0
GPT-4o
Gemini 1.5 Flash leads by 0.3
No data
No data
GPT-4o
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 1.5 Flash
68.0%
Rank #109/125 · confidence 4
GPT-4o
winner74.8%
Rank #90/125 · confidence 4
Gemini 1.5 Flash
46.3%
Rank #170/188 · confidence 4
GPT-4o
winner54.3%
Rank #156/188 · confidence 4
Gemini 1.5 Flash
winner3.5%
Rank #177/187 · confidence 4
GPT-4o
3.3%
Rank #180/187 · confidence 4
Gemini 1.5 Flash
27.3%
Rank #95/115 · confidence 4
GPT-4o
winner30.9%
Rank #88/115 · confidence 4
Gemini 1.5 Flash
26.7%
Rank #153/185 · confidence 4
GPT-4o
winner33.3%
Rank #120/185 · confidence 4
Gemini 1.5 Flash
winner82.7%
Rank #45/74 · confidence 4
GPT-4o
75.9%
Rank #56/74 · confidence 4
Gemini 1.5 Flash
winner18.0%
Rank #47/68 · confidence 4
GPT-4o
15.0%
Rank #50/68 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 1.5 Flash | GPT-4o |
|---|---|---|
| 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 1.5 Flash | GPT-4o |
|---|---|---|
20 tests | Gemini 1.5 Flash speed / latency 236 tok/s / 1159ms input / output No data | GPT-4o speed / latency 135 tok/s / 1427ms input / output No data |
20 tests | Gemini 1.5 Flash speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data |
15 tests | Gemini 1.5 Flash speed / latency 163 tok/s / 1183ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
5 tests | Gemini 1.5 Flash speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data |
0 tests | Gemini 1.5 Flash speed / latency N/A / N/A input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
Gemini 1.5 Flash models/gemini-1.5-flash-8b speed / latency No data input / output $0.075/M/$0.150/M | GPT-4o gpt-4o-all speed / latency No data input / output $30.00/M |
Weighted outcome: GPT-4o. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search |
|---|
