Data points: 64
The readout for Gemini 2.5 Flash Image and GPT-5, before the detailed comparison sheet.
Decision read
GPT-5
GPT-5 currently has the stronger profile, with verified wins split 1 to 3.
Evidence depth
64 data points
Includes 0 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5
The charts below split 8 high-signal samples across speed, scores, and audit health.
Model compare Gemini 2.5 Flash Image vs GPT-5gemini-2-5-flash-image-vs-gpt-5 | Model A Gemini 2.5 Flash Image | Model B GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 3 wins |
| Where it leads | Cheapest input price | Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 2.5 Flash Image | GPT-5 |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 2.5 Flash Image | 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 2.5 Flash Image | GPT-5 |
|---|---|---|
20 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Gemini 2.5 Flash Image and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 2.5 Flash Image | GPT-5 |
|---|---|---|
| When to choose each model | Gemini 2.5 Flash Image Gemini 2.5 Flash Image is stronger when you prioritize Cheapest input price. | GPT-5 GPT-5 is stronger when you prioritize Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5 leads across 64 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 2.5 Flash Image vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | Gemini 2.5 Flash Image exposes 32.8K tokens; notable signals: Text input, Image input, Text output, Image output. | GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | |
| Context window | 32.8K tokens | 128K tokens |
| Max output | 32.8K tokens | 16.4K tokens |
| Released | Oct 2025 | Aug 2025 |
| Modalities | Input ImageText Output ImageText | Input FileImageText Output Text |
| Features | Text inputImage inputText outputImage outputStructured outputsJSON mode | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | 2025-01-31 | 2024-09-30 |
| OpenRouter ID | google/gemini-2.5-flash-image | openai/gpt-5-chat |
| References | No data | No data |
GPT-5
speed / latency
95 tok/s / 1234ms
input / output
No data
EasyMore5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
|---|
N1N5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 102 tok/s / 948ms input / output No data |
|---|
SkyAI5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 169 tok/s / 1894ms input / output No data |
|---|
Undy API5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 131 tok/s / 743ms input / output No data |
|---|
Gemini 2.5 Flash Image gemini-2.5-flash-image-preview speed / latency No data input / output $0.0005/M / $0.0005/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.051/M / $0.411/M |
Gemini 2.5 Flash Image gemini-2.5-flash-image-preview speed / latency No data input / output $0.0055/M / $0.0055/M | GPT-5 gpt-5-openai-compact speed / latency No data input / output $10.27/M / $10.27/M |
Gemini 2.5 Flash Image gemini-2.5-flash-image speed / latency No data input / output $0.0055/M / $0.0055/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.154/M / $1.23/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
