Claude Opus 5 vs Claude Sonnet 5
API pricing, context, and independently measured performance, side by side. Claude Sonnet 5 starts 60% cheaper on input than Claude Opus 5 at list prices.
Claude Opus 5
Anthropic · released Jul 24, 2026
Best input$5.00 / MTok
Best output$25.00 / MTok
Context1M
Providers9
Fastest measured2s° TTFT · 131 tok/s
VisionToolsReasoningStructured outputPrompt caching
Claude Sonnet 5
Anthropic · released Jun 30, 2026
Best input$2.00 / MTok
Best output$10.00 / MTok
Context1M
Providers9
Fastest measured0.87s° TTFT · 90 tok/s
VisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Claude Opus 5 | CPOClaude Platform on AWS | $5.00 | $25.00 | 4.7s° | 442° tok/s | — |
| Claude Opus 5 |  Azure | $5.00 | $25.00 | 2s° | 131° tok/s | — |
| Claude Opus 5 |  Anthropic | $5.00 | $25.00 | 4.2s | 205 tok/s | — |
| Claude Sonnet 5 | Anthropic | $2.00 | $10.00 | 2.3s | 95 tok/s | — |
| Claude Sonnet 5 | CPOClaude Platform on AWS | $2.00 | $10.00 | 1.7s° | 71° tok/s | — |
| Claude Sonnet 5 | Azure | $2.00 | $10.00 | 1.7s° | 87° tok/s | — |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 72h) · chat10k profile (~10K in / 200 out) · ° = measured via OpenRouter routing (adds a hop) · SMOKE: of 5 programmatic capability probes passed · methodology v1.1 — full details on each model page