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 | Google: Gemini 3 Flash Preview | OpenAI: GPT-5.4 |
|---|---|---|
| Known Good Index | 83 | 90 |
| Coding Index | 77 | 89 |
| Mathematics Index | 93 | 98 |
| Reasoning Index | — | 88 |
| Agentic Index | 77 | 89 |
| Openness Index | 5 | 5 |
Quality Breakdown
Every evaluation both models report a published score for
Bar = Google: Gemini 3 Flash Preview · marker = OpenAI: GPT-5.4 · scores ingested from Epoch AI (CC-BY 4.0)
Right-hand figures read Google: Gemini 3 Flash Preview / OpenAI: GPT-5.4. Google: Gemini 3 Flash Preview leads on 0 of 4, OpenAI: GPT-5.4 on 4.
Arena Elo
Human preference rating from blind pairwise votes
Elo from blind pairwise votes, ingested from Arena. Higher is better.
| Metric | Google: Gemini 3 Flash Preview | OpenAI: GPT-5.4 |
|---|---|---|
| Text Arena | — | 1,452 |
| Text Arena (style controlled) | — | 1,465 |
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 | Google: Gemini 3 Flash Preview | OpenAI: GPT-5.4 |
|---|---|---|
| Input $/1M | $0.50 | $2.50 |
| Output $/1M | $3.00 | $15.00 |
| Blended $/1M | $1.12 | $5.62 |
| Cache read $/1M | $0.050 | $0.250 |
Context Window
Maximum input accepted and maximum output emitted
Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.
| Metric | Google: Gemini 3 Flash Preview | OpenAI: GPT-5.4 |
|---|---|---|
| Context window | 1.05M | 1.05M |
| Max output tokens | 66k | 128k |
Speed & Latency
Median throughput and time to first token across hosting providers
Medians across all tracked providers, derived from OpenRouter endpoint telemetry.
| Metric | Google: Gemini 3 Flash Preview | OpenAI: GPT-5.4 |
|---|---|---|
| Output tokens/s | 89 | 68 |
| Time to first token | 1.7s | 2.5s |
Providers
Which hosts serve each model, and at what price and speed
| Provider | Google: Gemini 3 Flash Preview blended | Google: Gemini 3 Flash Preview tok/s | OpenAI: GPT-5.4 blended | OpenAI: GPT-5.4 tok/s |
|---|---|---|---|---|
| Google AI Studio | $0.56 | 113 | — | — |
| Google · first party | $0.56 | 72 | — | — |
| Azure · first party | — | — | $5.62 | 59 |
| OpenAI · first party | — | — | $2.81 | 59 |
Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.