Claude Opus 4.8 vs Kimi K3
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Claude Opus 4.8
B
Kimi K3
- ProviderAnthropicMoonshot AI
- Rank#21#18Higher rank
- TierAA
- Score84.785.0Higher score
- Price$5 / $25 per 1M tokens (in/out)Open weights on Hugging Face; API $3 input / $15 output per 1M tokens ($0.30 cached input)Lower price tier
- TaglineAn earlier Anthropic Opus release (May 2026), strong across coding, reasoning and long-context knowledge work; since followed by Opus 5 and 5.5.Moonshot AI's 2.8T-parameter mixture-of-experts model and the highest-scoring open-weight entry on the Artificial Analysis Intelligence Index.
| Attribute | Claude Opus 4.8 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Rank | #21 | #18Higher rank |
| Tier | A | A |
| Score | 84.7 | 85.0Higher score |
| Price | $5 / $25 per 1M tokens (in/out) | Open weights on Hugging Face; API $3 input / $15 output per 1M tokens ($0.30 cached input)Lower price tier |
| Tagline | An earlier Anthropic Opus release (May 2026), strong across coding, reasoning and long-context knowledge work; since followed by Opus 5 and 5.5. | Moonshot AI's 2.8T-parameter mixture-of-experts model and the highest-scoring open-weight entry on the Artificial Analysis Intelligence Index. |