Claude Opus 5.5 vs Kimi K3.1 Pro
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Claude Opus 5.5
B
Kimi K3.1 Pro
- ProviderAnthropicMoonshot AI
- Rank#1Higher rank#6
- TierSS
- Score94.5Higher score91.6
- Price$4 input / $20 output per 1M tokens (API); included in Claude Pro, Max, Team and Enterprise plansAPI about $2 input / $10 output per 1M tokens via the Kimi API (per Artificial Analysis); open weights due by Nov 4, 2026Lower price tier
- TaglineAnthropic's current Opus model (September 2026), which Anthropic says performs at the level of Claude Fable 5.1 on most work at a lower price than Opus 5.Moonshot AI's flagship Kimi model (October 2026) for long-horizon coding and knowledge work, with native vision and a 1M-token context window.
| Attribute | Claude Opus 5.5 | Kimi K3.1 Pro |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Rank | #1Higher rank | #6 |
| Tier | S | S |
| Score | 94.5Higher score | 91.6 |
| Price | $4 input / $20 output per 1M tokens (API); included in Claude Pro, Max, Team and Enterprise plans | API about $2 input / $10 output per 1M tokens via the Kimi API (per Artificial Analysis); open weights due by Nov 4, 2026Lower price tier |
| Tagline | Anthropic's current Opus model (September 2026), which Anthropic says performs at the level of Claude Fable 5.1 on most work at a lower price than Opus 5. | Moonshot AI's flagship Kimi model (October 2026) for long-horizon coding and knowledge work, with native vision and a 1M-token context window. |