Quality
Known Good Index and the capability indices, side by side
Each index is min-max normalised across tracked models and scaled 0–100 from published evaluations. We do not run these evaluations.
| Metric | gemini-3-pro-preview | OpenAI: GPT-5.2 |
|---|---|---|
| Known Good Index | 83 | 80 |
| Coding Index | 74 | 76 |
| Mathematics Index | 91 | 96 |
| Science Index | 98 | 96 |
| Reasoning Index | 89 | 77 |
| Agentic Index | 74 | 76 |
| Openness Index | 5 | 5 |
Quality Breakdown
Every evaluation both models report a published score for
Bar = gemini-3-pro-preview · marker = OpenAI: GPT-5.2 · scores ingested from Epoch AI (CC-BY 4.0)
Right-hand figures read gemini-3-pro-preview / OpenAI: GPT-5.2. gemini-3-pro-preview leads on 2 of 5, OpenAI: GPT-5.2 on 3.
Arena Elo
Human preference rating from blind pairwise votes
Elo from blind pairwise votes, ingested from Arena. Higher is better.
| Metric | gemini-3-pro-preview | OpenAI: GPT-5.2 |
|---|---|---|
| Text Arena | — | 1,411 |
| Text Arena (style controlled) | — | 1,434 |
Price & Cost
Published API pricing by token type
USD per 1M tokens. Blended is a 3:1 input:output mix. Live from OpenRouter, cross-checked against models.dev. Lower is better.
| Metric | gemini-3-pro-preview | OpenAI: GPT-5.2 |
|---|---|---|
| Input $/1M | — | $1.75 |
| Output $/1M | — | $14.00 |
| Blended $/1M | — | $4.81 |
| Cache read $/1M | — | $0.175 |
Context Window
Maximum input accepted and maximum output emitted
Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.
| Metric | gemini-3-pro-preview | OpenAI: GPT-5.2 |
|---|---|---|
| Context window | — | 400k |
| Max output tokens | — | 128k |
Speed & Latency
Median throughput and time to first token across hosting providers
Medians across all tracked providers, derived from OpenRouter endpoint telemetry.
| Metric | gemini-3-pro-preview | OpenAI: GPT-5.2 |
|---|---|---|
| Output tokens/s | — | 54 |
| Time to first token | — | 2.5s |
Providers
Which hosts serve each model, and at what price and speed
| Provider | gemini-3-pro-preview blended | gemini-3-pro-preview tok/s | OpenAI: GPT-5.2 blended | OpenAI: GPT-5.2 tok/s |
|---|---|---|---|---|
| OpenAI · first party | — | — | $2.41 | 49 |
| Azure · first party | — | — | $4.81 | 43 |
Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.