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Moonshot's Kimi K3.1 Pro ranks high on benchmark, undercuts Opus 5.5 pricing

Moonshot's Kimi K3.1 Pro model has achieved a top ranking on the Artificial Analysis benchmark, surpassing Anthropic's Opus 5.5. The new model is priced at $2/$10 per 1M tokens, significantly lower than Opus 5.5's $4/$20 per 1M tokens. A test build of Kimi K3.1 Pro scored 90.5% on a cyber test, with the released version scoring 81.0%. AI

IMPACT Sets a new competitive price point for high-performing LLMs, potentially driving down costs for users.

RANK_REASON New model release from a frontier lab with benchmark results and pricing information. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on Mastodon — mastodon.social →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Moonshot's Kimi K3.1 Pro ranks high on benchmark, undercuts Opus 5.5 pricing

How we ranked this

Signal score
15 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Significant
New model release from a frontier lab with benchmark results and pricing information. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
model release, product
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. Mastodon — mastodon.social TIER_1 English(EN) · mohith808 ·

    kimi k3.1 pro just went #4 on artificial analysis 55 vs opus 5.5 at 58 $2 / $10 per 1M tokens vs $4 / $20 weights out by nov 4 and moonshot stripped hacking dat

    kimi k3.1 pro just went #4 on artificial analysis 55 vs opus 5.5 at 58 $2 / $10 per 1M tokens vs $4 / $20 weights out by nov 4 and moonshot stripped hacking data from training on purpose. a test build scored 90.5% on its cyber test, the release 81.0% https://www. kimi.ai/blog/kim…