InferIndex · https://inferindex.dev/en/compare/anthropic/claude-opus-5.5/vs/deepseek/deepseek-v4.1-flash
Claude Opus 5.5 costs from $8.00 per million tokens at a 3:1 input:output mix: the cheapest price. DeepSeek V4.1 Flash costs from $0.223, the cheapest of 30 current offers without a flag. A lower price, $0.151, is listed with a flag. Prices checked on .
At these prices, Claude Opus 5.5 costs 35.9× as much as DeepSeek V4.1 Flash per million tokens (at a 3:1 input:output mix).
Each model's lowest blended price, per 1M tokens, across every provider we track.
| Model | Lowest blended price, $ per 1M tokens. Green background: the most favourable value of each column. | Input price of the cheapest offer, per 1M tokens | Output price of the cheapest offer, per 1M tokens | The provider's published policy says the text you send is not used to train models. We only show what is published; we can't check it ourselves. | For 2,000 input tokens and 500 output tokens per request, 1,000 requests a day, at the cheapest offer for that workload. Change the workload above. | Offers | Providers | The maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut. | Observation |
|---|---|---|---|---|---|---|---|---|---|
| Most expensive offer · $0.85. The highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted. Green background: the most favourable value of each column., most favourable value of the column | $0.035, most favourable value of the column | $0.50, most favourable value of the column | at DeepInfra, most favourable value of the column | $9.60, most favourable value of the columnat Relace via Vercel AI Gateway | 120 | 76, most favourable value of the column | 1M | Cheapest. Lowest blended price, $ per 1M tokens | |
| Most expensive offer · $8.80. The highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted. | $4.00 | $20.00 | $8.00 | $540.00at Anthropic | 64 | 25 | 1M |
Green background: the most favourable value of each column.
Prices as of Oct 31, 2026, 7:54 AM UTCSame rules as the API's /cheapest route. The monthly estimate uses the cheapest offer for that workload.
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