Gemini 3.1 Pro vs Kimi K2 Instruct
At a Glance
| Compare |  Gemini 3.1 ProGoogle DeepMind |  Kimi K2 InstructMoonshot AI |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #9 of 4679.7 score · 3/3 sources · complete | UnrankedNot in the 46-model eligible cohort |
| CostLower is better · Published-token output estimate | #27 of 44$0.161 per LiveBench case | UnrankedNot in the 44-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.5 | #9 of 3859.2 score · 3/3 sources · complete | UnrankedNot in the 38-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $2.00Google AI ↗ · Aug 29, 2026 | $0.57Openrouter ↗ · Aug 29, 2026 |
| Output priceFrom · USD / 1M tokens | $12.00Google AI ↗ · Aug 29, 2026 | $2.30Openrouter ↗ · Aug 29, 2026 |
| Context windowMaximum documented tokens | 1,049K | 131K |
| Model facts checked | Aug 29, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Gemini 3.1 Pro | Kimi-K2-Instruct |
|---|---|---|
| Developer | Google DeepMind | Moonshot AI |
| Family | Gemini 3 | Kimi K2 Instruct |
| Model | Gemini 3.1 Pro | Kimi-K2-Instruct |
| Version | Gemini 3.1 Pro | Kimi-K2-Instruct |
| Lifecycle | preview | active |
| Released | Unknown | 2025-07-11 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image, Video, Audio, Document | Text |
| Output modalities | Text | Text |
| Context window | 1,049K | 131K |
| Total parameters | Unknown | 1T |
| Active parameters | Unknown | 32B |
| License | Unknown | other |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Google AI (Standard), Google Gemini (Standard) | Hugging Face (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, tools |
Gemini 3.1 Pro Capabilities
Kimi K2 Instruct Capabilities
Related Comparisons
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Primary Evidence
Sources and Freshness
Questions
Gemini 3.1 Pro vs Kimi K2 Instruct FAQs
Is Gemini 3.1 Pro or Kimi K2 Instruct better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Gemini 3.1 Pro and Kimi K2 Instruct, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Gemini 3.1 Pro or Kimi K2 Instruct?+
Gemini 3.1 Pro is $2.00 and Kimi K2 Instruct is $0.57 per million tokens, so Kimi K2 Instruct is cheaper on this metric. Gemini 3.1 Pro is $12.00 and Kimi K2 Instruct is $2.30 per million tokens, so Kimi K2 Instruct is cheaper on this metric.
Which has a larger context window, Gemini 3.1 Pro or Kimi K2 Instruct?+
Gemini 3.1 Pro has the larger sourced context window. Gemini 3.1 Pro supports 1,049K and Kimi K2 Instruct supports 131K.
Which performs better in benchmarks, Gemini 3.1 Pro or Kimi K2 Instruct?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Gemini 3.1 Pro or Kimi K2 Instruct be self-hosted?+
Kimi K2 Instruct is the only model in this pair currently marked as self-hostable. Gemini 3.1 Pro is not marked open weight; Kimi K2 Instruct is open weight.
Can Gemini 3.1 Pro and Kimi K2 Instruct understand images?+
Gemini 3.1 Pro is documented with image input; Kimi K2 Instruct is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Gemini 3.1 Pro or Kimi K2 Instruct?+
Neither has a larger sourced maximum output. Gemini 3.1 Pro is 66K and Kimi K2 Instruct is —.
Do Gemini 3.1 Pro and Kimi K2 Instruct support reasoning and tool use?+
Gemini 3.1 Pro: reasoning, tool calling, and image input. Kimi K2 Instruct: tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Gemini 3.1 Pro or Kimi K2 Instruct?+
Gemini 3.1 Pro has 2 sourced provider routes; Kimi K2 Instruct has 2, a tie.
Which offers better value, Gemini 3.1 Pro or Kimi K2 Instruct?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.