Data points: 118
Model compare
The readout for Gemini 2.5 Flash and Gemini 3 Flash, before the detailed comparison sheet.
Weighted outcome: Gemini 3 Flash. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Gemini 3 Flash
Gemini 3 Flash has the higher weighted result; Model A / B score 8 to 92.
Evidence depth
118 data points
Includes 24 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with Gemini 3 Flash
The charts below split 32 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 2.5 Flash and Gemini 3 Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 2.5 Flash | Gemini 3 Flash |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 8.0 pts | 92.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Cheapest input price, Free providers | Average speed, First-token latency, Provider coverage |
| Context window | 1.0M tokens | 1.0M tokens |
| Max output | 65.5K tokens | 65.5K tokens |
| Modalities | Input FileImageTextAudiovideo 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 2.5 Flash | Gemini 3 Flash |
|---|---|---|
| Developer | ||
| Released | Jun 2025 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | Gemini | Gemini |
| Knowledge cutoff | 2025-01-31 | No data |
| OpenRouter ID | google/gemini-2.5-flash | google/gemini-3-flash-preview |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 2.5 Flash and Gemini 3 Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 2.5 Flash
Gemini 2.5 Flash has these operational advantages: Cheapest input price, Free providers.
Gemini 3 Flash
Gemini 3 Flash is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Average speed, First-token latency, 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 2.5 Flash
45.4
Avg. score
Gemini 3 Flash
50.1
Gemini 3 Flash leads by 6.7
Gemini 3 Flash leads by 2.9
Gemini 3 Flash leads by 2.9
Gemini 3 Flash leads by 9.7
Gemini 3 Flash leads by 1.1
No data
No data
Gemini 3 Flash leads by 4.9
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 2.5 Flash
45.0
Rank #68/84 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner57.0
Rank #38/84 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
winner$0.300/M
Rank #46/162 · confidence 4
Gemini 3 Flash
$0.500/M
Rank #69/162 · confidence 4
Gemini 2.5 Flash
winner$0.850/M
Rank #67/162 · confidence 4
Gemini 3 Flash
$1.13/M
Rank #81/162 · confidence 4
Gemini 2.5 Flash
winner$2.50/M
Rank #75/162 · confidence 4
Gemini 3 Flash
$3.00/M
Rank #85/162 · confidence 4
Gemini 2.5 Flash
83.2%
Rank #40/125 · confidence 4
Gemini 3 Flash
winner88.2%
Rank #7/125 · confidence 4
Gemini 2.5 Flash
1.4
Rank #50/73 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
1.4
Rank #50/73 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
45.9
Rank #72/89 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner48.0
Rank #68/89 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
79.0%
Rank #76/188 · confidence 4
Gemini 3 Flash
winner81.2%
Rank #72/188 · confidence 4
Gemini 2.5 Flash
11.1%
Rank #89/187 · confidence 4
Gemini 3 Flash
winner14.1%
Rank #76/187 · confidence 4
Gemini 2.5 Flash
39.4%
Rank #80/185 · confidence 4
Gemini 3 Flash
winner49.9%
Rank #18/185 · confidence 4
Gemini 2.5 Flash
69.5%
Rank #30/115 · confidence 4
Gemini 3 Flash
winner79.7%
Rank #19/115 · confidence 4
Gemini 2.5 Flash
29.1
Rank #88/96 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner49.9
Rank #23/96 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
4.8
Rank #38/47 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner35.6
Rank #16/47 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
4.2
Rank #23/35 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
4.2
Rank #23/35 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
29.1
Rank #44/56 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner50.5
Rank #29/56 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
winner93.3
Rank #6/90 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
90.2
Rank #11/90 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
26.5
Rank #51/90 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner45.5
Rank #14/90 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
68.3
Rank #76/96 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner81.2
Rank #59/96 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
5.1
Rank #79/96 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner14.1
Rank #62/96 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
14.1
Rank #86/99 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner27.4
Rank #62/99 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
65.5
Rank #43/57 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner78.6
Rank #12/57 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
1140.0
Rank #55/66 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner1221.0
Rank #34/66 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
39.0
Rank #74/86 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner55.1
Rank #56/86 · confidence 1 · eval date 2025-12-01
Gemini 2.5 Flash
14.9
Rank #84/84 · confidence 1 · eval date 2025-06-17
Gemini 3 Flash
winner43.3
Rank #70/84 · confidence 1 · eval date 2025-12-01
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 2.5 Flash | Gemini 3 Flash |
|---|---|---|
Winner: Gemini 3 Flash | Gemini 2.5 Flash gemini-2.5-flash No audit yet | Gemini 3 Flash gemini-3-flash Audit score 84 888463100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 2.5 Flash | Gemini 3 Flash |
|---|---|---|
45 tests | Gemini 2.5 Flash speed / latency 208 tok/s / 5688ms input / output No data | Gemini 3 Flash speed / latency 269 tok/s / 4314ms input / output No data |
40 tests | Gemini 2.5 Flash speed / latency 54 tok/s / 10365ms input / output No data | Gemini 3 Flash speed / latency 129 tok/s / 10293ms input / output No data |
25 tests | Gemini 2.5 Flash speed / latency 200 tok/s / 8207ms input / output No data | Gemini 3 Flash speed / latency 157 tok/s / 7994ms input / output No data |
25 tests | Gemini 2.5 Flash speed / latency 139 tok/s / 4002ms input / output No data | Gemini 3 Flash speed / latency N/A / N/A input / output No data |
15 tests | Gemini 2.5 Flash speed / latency 189 tok/s / 11433ms input / output No data | Gemini 3 Flash speed / latency 160 tok/s / 6933ms input / output No data |
Gemini 2.5 Flash gemini-2.5-flash speed / latency No data input / output $0/M/$0/M | Gemini 3 Flash gemini-3-flash-preview speed / latency No data input / output $0/M | |
Gemini 2.5 Flash gemini-2.5-flash-nothinking speed / latency No data input / output $0/request | Gemini 3 Flash gemini-3-flash-preview-nothinking speed / latency No data input / output $0/request |
Weighted outcome: Gemini 3 Flash. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input TextImageFileAudiovideo Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
