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 | claude-sonnet-4-5-20250929 | Google: Gemini 3 Flash Preview |
|---|---|---|
| Known Good Index | 59 | 83 |
| Coding Index | 61 | 77 |
| Mathematics Index | 89 | 93 |
| Science Index | 84 | 86 |
| Reasoning Index | 48 | — |
| Agentic Index | 61 | 77 |
| Openness Index | 5 | 5 |
Quality Breakdown
Every evaluation both models report a published score for
Bar = claude-sonnet-4-5-20250929 · marker = Google: Gemini 3 Flash Preview · scores ingested from Epoch AI (CC-BY 4.0)
Right-hand figures read claude-sonnet-4-5-20250929 / Google: Gemini 3 Flash Preview. claude-sonnet-4-5-20250929 leads on 0 of 4, Google: Gemini 3 Flash Preview on 4.
Arena Elo
Human preference rating from blind pairwise votes
Elo from blind pairwise votes, ingested from Arena. Higher is better.
| Metric | claude-sonnet-4-5-20250929 | Google: Gemini 3 Flash Preview |
|---|---|---|
| Text Arena | 1,438 | — |
| Text Arena (style controlled) | 1,455 | — |
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 | claude-sonnet-4-5-20250929 | Google: Gemini 3 Flash Preview |
|---|---|---|
| Input $/1M | — | $0.50 |
| Output $/1M | — | $3.00 |
| Blended $/1M | — | $1.12 |
| Cache read $/1M | — | $0.050 |
Context Window
Maximum input accepted and maximum output emitted
Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.
| Metric | claude-sonnet-4-5-20250929 | Google: Gemini 3 Flash Preview |
|---|---|---|
| Context window | — | 1.05M |
| Max output tokens | — | 66k |
Speed & Latency
Median throughput and time to first token across hosting providers
Medians across all tracked providers, derived from OpenRouter endpoint telemetry.
| Metric | claude-sonnet-4-5-20250929 | Google: Gemini 3 Flash Preview |
|---|---|---|
| Output tokens/s | — | 89 |
| Time to first token | — | 2.0s |
Providers
Which hosts serve each model, and at what price and speed
| Provider | claude-sonnet-4-5-20250929 blended | claude-sonnet-4-5-20250929 tok/s | Google: Gemini 3 Flash Preview blended | Google: Gemini 3 Flash Preview tok/s |
|---|---|---|---|---|
| Google · first party | — | — | $0.56 | 85 |
| Google AI Studio | — | — | $0.56 | 60 |
Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.