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Compare performance benchmarks, coding intelligence, reasoning evaluations, context limits, and API economics between Claude Haiku 5.5 (Anthropic) and Kimi K3.1 Pro (Moonshot AI).
| Metric / Capability | Claude Haiku 5.5 | Kimi K3.1 Pro |
|---|---|---|
| Developer / Organization | Anthropic | Moonshot AI |
| Release Date | 2026-10-07 | 2026-10-23 |
| Deployment / Weights | Proprietary Cloud API | Proprietary Cloud API |
| Context Window | 1M tokens (1,000,000 tokens) | 1.0M tokens (1,048,576 tokens) |
| Input Pricing (/1M Tokens) | $0.1 | $2 |
| Output Pricing (/1M Tokens) | $0.5 | $10 |
| Benchmark / Domain | Claude Haiku 5.5 | Kimi K3.1 Pro | Advantage |
|---|---|---|---|
Artificial Analysis Intelligence Index Composite index aggregating 10+ evaluations of general reasoning and knowledge. | 43.4% | 55.1% | Kimi K3.1 Pro (+27%) |
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. | 37.3% | — | — |
Terminal-Bench 4.0 Sandboxed command-line tasks requiring shell and file-system operation. | 39.2% | 65.7% | Kimi K3.1 Pro (+68%) |
ARC-AGI-2 Novel visual grid puzzles requiring abstract rule induction. | 61.3% | — | — |
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. | 45.9% | 51.1% | Kimi K3.1 Pro (+11%) |
FrontierMath v2 (Tiers 1-3) Unpublished, research-level mathematics problems across Tiers 1-3. | 75.1% | — | — |
Design Arena ELO Human-preference ELO across UI, 3D, data-visualization, and game-dev generations. | 1344 | 1448 | Kimi K3.1 Pro (+8%) |
Kimi K3.1 Pro outperforms Claude Haiku 5.5 across 4 evaluated benchmarks compared to 0 for Claude Haiku 5.5, excelling in Artificial Analysis Intelligence Index, Terminal-Bench 4.0, Humanity's Last Exam.
Kimi K3.1 Pro has the larger context capacity of 1.0M tokens (1,048,576 tokens), compared to 1M tokens for Claude Haiku 5.5.
Claude Haiku 5.5 is more cost-effective. Input tokens cost $0.1/M tokens vs $2/M tokens for Kimi K3.1 Pro.
Claude Haiku 5.5 is a proprietary cloud API. Kimi K3.1 Pro is a proprietary cloud API.
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