Observed 2026-06-03 11:12. Prices are USD per 1M tokens (from OpenRouter public pricing). Input: Claude Opus 4.8 $5 / GPT-4o $2.5, output: $25 / $10.
✓ = 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 | GPT-4o openai/gpt-4o |
|---|---|---|
| Input priceUSD/1M | $5 | $2.5✓ |
| Output priceUSD/1M | $25 | $10✓ |
| Cache readUSD/1M | $0.5 | Accumulating… |
| Context windowtokens | 1,000k✓ | 128k |
Source: OpenRouter /api/v1/models → collect_prices.py → Source(price)。 · Claude Opus 4.8: anthropic/claude-opus-4.8 · GPT-4o: openai/gpt-4o
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 / GPT-4o $2.5 per 1M tokens — GPT-4o is cheaper. Output is $25 / $10 — GPT-4o is cheaper.
Claude Opus 4.8: 1,000,000 tokens, GPT-4o: 128,000 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.