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Compare performance benchmarks, coding intelligence, reasoning evaluations, context limits, and API economics between Kimi K3.1 Pro (Moonshot AI) and Gemini 4 Argon (Google DeepMind).
| Metric / Capability | Kimi K3.1 Pro | Gemini 4 Argon |
|---|---|---|
| Developer / Organization | Moonshot AI | Google DeepMind |
| Release Date | 2026-10-23 | 2026-10-13 |
| Deployment / Weights | Proprietary Cloud API | Proprietary Cloud API |
| Context Window | 1.0M tokens (1,048,576 tokens) | 1.0M tokens (1,048,576 tokens) |
| Input Pricing (/1M Tokens) | $2 | $2 |
| Output Pricing (/1M Tokens) | $10 | $10 |
| Benchmark / Domain | Kimi K3.1 Pro | Gemini 4 Argon | Advantage |
|---|---|---|---|
Artificial Analysis Intelligence Index Composite index aggregating 10+ evaluations of general reasoning and knowledge. | 55.1% | 52.6% | Kimi K3.1 Pro (+5%) |
Artificial Analysis Coding Agent Index v2.0 Composite index of coding-agent systems (model + harness) across FrontierCode v1.1, SWE-Atlas-QnA, and Terminal-Bench v4. | — | 53.2% | — |
Terminal-Bench 4.0 Sandboxed command-line tasks requiring shell and file-system operation. | 65.7% | 57.4% | Kimi K3.1 Pro (+14%) |
ARC-AGI-2 Novel visual grid puzzles requiring abstract rule induction. | — | 91.3% | — |
GPQA Diamond Graduate-level physics, chemistry, and biology questions written by domain experts. | 94.2% | — | — |
Humanity's Last Exam Expert-written questions across hundreds of disciplines designed to resist saturation. | 51.1% | — | — |
FrontierMath v2 (Tiers 1-3) Unpublished, research-level mathematics problems across Tiers 1-3. | — | 86.0% | — |
Design Arena ELO Human-preference ELO across UI, 3D, data-visualization, and game-dev generations. | 1448 | 1438 | Kimi K3.1 Pro (+1%) |
Kimi K3.1 Pro leads across 3 evaluated benchmarks compared to 0 for Gemini 4 Argon, showing notable advantages in Artificial Analysis Intelligence Index, Terminal-Bench 4.0, Design Arena ELO.
Both models feature equivalent context windows of 1.0M tokens (1,048,576 tokens).
Both models have comparable pricing structures or open weight deployment options.
Kimi K3.1 Pro is a proprietary cloud API. Gemini 4 Argon is a proprietary cloud API.
Analyze 130+ models side-by-side using interactive radar charts, cost-efficiency quadrant plots, and live dataset filters on the full NeuBench index.
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