InferIndex · https://inferindex.dev/en/compare/anthropic/claude-opus-5.5/vs/moonshotai/kimi-k3.1-pro
Claude Opus 5.5 costs from $8.00 per million tokens and Kimi K3.1 Pro from $3.60 (at a 3:1 input:output mix): the cheapest price for each; prices checked on .
Verdict
At these prices, Claude Opus 5.5 costs 2.2× as much as Kimi K3.1 Pro 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 · $6.00. 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 | $1.80, most favourable value of the column | $9.00, most favourable value of the column | $3.60, most favourable value of the column | $243.00, most favourable value of the columnat InferenceNet via OpenRouter | 62 | 33, 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 Nov 4, 2026, 10:07 PM UTCSame rules as the API's /cheapest route. The monthly estimate uses the cheapest offer for that workload.