Data points: 66
Model compare
The readout for Gemini 2.0 Flash and GPT-5.1, before the detailed comparison sheet.
Weighted outcome: GPT-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.1
GPT-5.1 has the higher weighted result; Model A / B score 4 to 96.
Evidence depth
66 data points
Includes 5 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.1
The charts below split 12 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 2.0 Flash and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 2.0 Flash | GPT-5.1 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 4.0 pts | 96.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | Cheapest input price | Average speed, First-token latency, Free providers, Provider coverage |
| Context window | No data | 400K tokens |
| Max output | No data | 128K tokens |
| Modalities | No data | Input ImageTextFile 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 2.0 Flash | GPT-5.1 |
|---|---|---|
| Developer | OpenAI | |
| Released | No data | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | openai/gpt-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 2.0 Flash and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 2.0 Flash
Gemini 2.0 Flash has these operational advantages: Cheapest input price.
GPT-5.1
GPT-5.1 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Average speed, First-token latency, 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 2.0 Flash
48.1
Avg. score
GPT-5.1
52
GPT-5.1
GPT-5.1 leads by 4.2
GPT-5.1 leads by 5.5
GPT-5.1
GPT-5.1 leads by 1.8
No data
No data
GPT-5.1
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 2.0 Flash
78.2%
Rank #71/125 · confidence 4
GPT-5.1
winner87.0%
Rank #12/125 · confidence 4
Gemini 2.0 Flash
63.6%
Rank #132/188 · confidence 4
GPT-5.1
winner87.3%
Rank #33/188 · confidence 4
Gemini 2.0 Flash
4.7%
Rank #141/187 · confidence 4
GPT-5.1
winner26.5%
Rank #40/187 · confidence 4
Gemini 2.0 Flash
21.0%
Rank #103/115 · confidence 4
GPT-5.1
winner86.8%
Rank #4/115 · confidence 4
Gemini 2.0 Flash
34.0%
Rank #116/185 · confidence 4
GPT-5.1
winner43.3%
Rank #42/185 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 2.0 Flash | GPT-5.1 |
|---|---|---|
| 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 2.0 Flash | GPT-5.1 |
|---|---|---|
110 tests | Gemini 2.0 Flash speed / latency 145 tok/s / 5183ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
20 tests | Gemini 2.0 Flash speed / latency 140 tok/s / 863ms input / output No data | GPT-5.1 speed / latency 96 tok/s / 1862ms input / output No data |
18 tests | Gemini 2.0 Flash speed / latency 146 tok/s / 4979ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
10 tests | Gemini 2.0 Flash speed / latency 17 tok/s / 2687ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | Gemini 2.0 Flash speed / latency 175 tok/s / 557ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
Gemini 2.0 Flash gemini-2.0-flash-exp speed / latency No data input / output $0/request | GPT-5.1 gpt-5.1-chat-latest speed / latency No data input / output $0/request | |
Gemini 2.0 Flash gemini-2.0-flash speed / latency No data input / output $0.014/M/$0.055/M | GPT-5.1 gpt-5.1 speed / latency No data input / output $0.342/M |
Weighted outcome: GPT-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
