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Observed 2026-06-03 11:12. Prices are USD per 1M tokens (from OpenRouter public pricing). Input: Claude Opus 4.8 $5 / Claude Sonnet 4 $3, output: $25 / $15.
✓ = the mechanically better side per row (cheaper price / longer context). Magnitude only, not a rating.
| Field | Claude Opus 4.8 anthropic/claude-opus-4.8 | Claude Sonnet 4 anthropic/claude-sonnet-4 |
|---|---|---|
| Input priceUSD/1M | $5 | $3✓ |
| Output priceUSD/1M | $25 | $15✓ |
| Cache readUSD/1M | $0.5 | $0.3✓ |
| Context windowtokens | 1,000k | 1,000k |
Source: OpenRouter /api/v1/models → collect_prices.py → Source(price)。 · Claude Opus 4.8: anthropic/claude-opus-4.8 · Claude Sonnet 4: anthropic/claude-sonnet-4
Aggregated observations, not predictions. Prices change (observation time noted). © TraceBottle for AI
As observed on 2026-06-03 11:12, input is Claude Opus 4.8 $5 / Claude Sonnet 4 $3 per 1M tokens — Claude Sonnet 4 is cheaper. Output is $25 / $15 — Claude Sonnet 4 is cheaper.
Claude Opus 4.8: 1,000,000 tokens, Claude Sonnet 4: 1,000,000 tokens (observed 2026-06-03 11:12).
Observed 2026-06-03 11:12 (UTC). Source: OpenRouter public pricing (/api/v1/models). Prices change — check each provider's official pricing for the latest. This site publishes only observed values, never predictions.