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 | Anthropic: Claude Opus 4.7 | Anthropic: Claude Sonnet 4.6 |
|---|---|---|
| Known Good Index | 94 | 80 |
| Coding Index | 100 | 71 |
| Mathematics Index | 98 | 86 |
| Science Index | 95 | 91 |
| Reasoning Index | 86 | — |
| Agentic Index | 100 | 71 |
| Openness Index | 5 | 5 |
Quality Breakdown
Every evaluation both models report a published score for
Bar = Anthropic: Claude Opus 4.7 · marker = Anthropic: Claude Sonnet 4.6 · scores ingested from Epoch AI (CC-BY 4.0)
Right-hand figures read Anthropic: Claude Opus 4.7 / Anthropic: Claude Sonnet 4.6. Anthropic: Claude Opus 4.7 leads on 4 of 4, Anthropic: Claude Sonnet 4.6 on 0.
Arena Elo
Human preference rating from blind pairwise votes
Elo from blind pairwise votes, ingested from Arena. Higher is better.
| Metric | Anthropic: Claude Opus 4.7 | Anthropic: Claude Sonnet 4.6 |
|---|---|---|
| Text Arena | 1,482 | 1,458 |
| Text Arena (style controlled) | 1,494 | 1,473 |
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 | Anthropic: Claude Opus 4.7 | Anthropic: Claude Sonnet 4.6 |
|---|---|---|
| Input $/1M | $5.00 | $3.00 |
| Output $/1M | $25.00 | $15.00 |
| Blended $/1M | $10.00 | $6.00 |
| Cache read $/1M | $0.500 | $0.300 |
Context Window
Maximum input accepted and maximum output emitted
Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.
| Metric | Anthropic: Claude Opus 4.7 | Anthropic: Claude Sonnet 4.6 |
|---|---|---|
| Context window | 1.00M | 1.00M |
| Max output tokens | 128k | 128k |
Speed & Latency
Median throughput and time to first token across hosting providers
Medians across all tracked providers, derived from OpenRouter endpoint telemetry.
| Metric | Anthropic: Claude Opus 4.7 | Anthropic: Claude Sonnet 4.6 |
|---|---|---|
| Output tokens/s | 52 | 41 |
| Time to first token | 1.4s | 1.6s |
Providers
Which hosts serve each model, and at what price and speed
| Provider | Anthropic: Claude Opus 4.7 blended | Anthropic: Claude Opus 4.7 tok/s | Anthropic: Claude Sonnet 4.6 blended | Anthropic: Claude Sonnet 4.6 tok/s |
|---|---|---|---|---|
| Google · first party | $10.00 | 70 | $6.00 | 41 |
| Anthropic · first party | $10.00 | 45 | $6.00 | 38 |
| Amazon Bedrock · first party | $10.00 | 17 | $6.00 | 41 |
| Azure · first party | $10.00 | — | $6.00 | — |
Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.