Compare / Anthropic vs Moonshot AI

AI labs compared · October 2026

Anthropic vs Moonshot AI: which AI lab is ahead?

Each lab's best model on sale goes head to head on every kind of work we measure, from our own benchmarks and licensed sources. 23 models in all; a lab is only as good as the model you would actually pick from it.

16 models on sale with our resultsAnthropic Best: Claude Opus 5.5 · newest: Claude Haiku 5.5
7 models on sale with our resultsMoonshot AI Best: Kimi K3 · newest: Kimi K3
Anthropic wins 9Moonshot AI wins 0

Kinds of work led by each lab's best model there, of the 9 both are measured on.

Results as of 8 October 2026 (catalogue release 2026-10-08-4199ce0620fe). Models on sale means listed on OpenRouter today.

Anthropic or Moonshot AI? The short answer

Anthropic is ahead: its best models beat Moonshot AI's in all 9 kinds of work both are measured on.

  • Pick Anthropic for product listings, decks from an analysis, marketing planning, agents and tool use, professional work, reasoning and knowledge, writing, sticking to the facts and speed under pressure.
  • On our overall leaderboard, Claude Opus 5.5 is #1 (85 of 100) and Kimi K3 is #10 (50).
  • Prices start at $0.20 per million tokens for Anthropic (Claude Haiku 5.5) and $1.00 for Moonshot AI (Kimi K2 (0711)).

Head to head

85Claude Opus 5.5
Best Spring Prompt overall score
50Kimi K3
57.6Claude Opus 5.5
Best Intelligence Index
43.6Kimi K3
$8.00Claude Opus 5.5
Flagship price, per million tokens
$6.00Kimi K3
$0.20Claude Haiku 5.5
Cheapest model, per million tokens
$1.00Kimi K2 (0711)
16
Models on sale with our results
7

Each line names the model behind the number. Prices are blended, three input tokens to one output, at the developer's list price where we have read it; see every model's price. Intelligence Index from Artificial Analysis; overall score from our leaderboard.

Which lab is better for what

For each kind of work, each lab's best model there and its rank among every model on sale. Further right is better; the better rank is in green.

Product listingsTurning a sparse product feed and photos into listings that can go live 6 of 20Claude Opus 5.5 13 of 20Kimi K3
Decks from an analysisTurning a finished analysis into a deck you could present as it is 4 of 19Claude Sonnet 5.5 8 of 19Kimi K3
User surveysPlanning a user survey and reading its results without being misled 2 of 8Claude Opus 5.5 not measured
Marketing planningPlanning a year of ad spend without overspending 4 of 19Claude Sonnet 5.5 8 of 19Kimi K3
Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls 1 of 164Claude Sonnet 5.5 19 of 164Kimi K2 (0711)
Professional workReal tasks from banking, consulting and law, business documents and freelance projects 1 of 51Claude Sonnet 5.5 24 of 51Kimi K3
Reasoning and knowledgeHard questions across science, maths and general knowledge 1 of 198Claude Opus 5.5 15 of 198Kimi K3
WritingWhat people prefer in blind comparisons, and judged writing quality 1 of 188Claude Fable 5 11 of 188Kimi K3
Sticking to the factsSummarising without inventing things, and factual answers 2 of 152Claude Opus 5.5 28 of 152Kimi K3
Speed under pressureGood decisions against a real clock (fast chess) 15 of 22Claude Haiku 5.5 19 of 22Kimi K3

Every model, by intelligence and price

Each dot is a model on sale with an Intelligence Index from Artificial Analysis. Up is smarter; left is cheaper. Hover or tap a dot for its name.

AnthropicMoonshot AI

020406080 $0.1$1$10$100 Price per million tokens, blended (log scale) Intelligence Index Claude Opus 5.5Claude Fable 5.1Claude Sonnet 5.5Claude Opus 5Claude Fable 5Kimi K3

On our overall leaderboard

The 6 of their models we rank overall: one score out of 100 across everything we publish (how the score works). Only models with enough of our own results are ranked.

  1. #1Claude Opus 5.585
  2. #5Claude Fable 5.166
  3. #7Claude Sonnet 5.564
  4. #10Kimi K350
  5. #13Claude Haiku 5.544
  6. #22Claude Haiku 4.57

Benchmark by benchmark

The headline result of every benchmark both labs have models on: each lab's best model and its rank among the models on sale. Green marks the better rank.

MeasureAnthropicMoonshot AI
Agents and tool use
Berkeley Function Calling Leaderboard (BFCL) V4 · Overall accuracy · BFCL% correct, higher is better 77.5%Claude Opus 4.5 · 1 of 3859.1%Kimi K2 (0711) · 6 of 38
OpenHands Index · Average% resolved, higher is better 81.0%Claude Fable 5 · 1 of 3357.1%Kimi K2.6 · 14 of 33
Microsoft STATE-Bench · Task success (pass@1) · STATE-Bench v0.7% of tasks, higher is better 53.4%Claude Opus 4.7 · 2 of 448.3%Kimi K2.6 · 3 of 4
Artificial Analysis · Terminal-Bench 4.0% of tasks, higher is better 63.6%Claude Sonnet 5.5 · 1 of 10512.6%Kimi K3 · 29 of 105
Artificial Analysis · Terminal-Bench 2.1% of tasks, higher is better 91.4%Claude Fable 5.1 · 1 of 11585.0%Kimi K3 · 11 of 115
Artificial Analysis · τ-bench banking% of tasks, higher is better 47.2%Claude Fable 5.1 · 7 of 11346.0%Kimi K3 · 9 of 113
Vending-Bench 2 · Money after a yearUS dollars, higher is better $11,182Claude Opus 5 · 3 of 56$6,205Kimi K2.6 · 15 of 56
Decks from an analysis
DeckBench · Deck ratingrating, higher is better 1,352Claude Sonnet 5.5 · 4 of 191,229Kimi K3 · 8 of 19
Marketing planning
ROASBench · Overall scorescore out of 100, higher is better 52.0Claude Sonnet 5.5 · 4 of 1944.1Kimi K3 · 8 of 19
Product listings
CatalogBench · Reliably publish-ready% of products, higher is better 55.4%Claude Opus 5.5 · 5 of 2041.1%Kimi K3 · 9 of 20
CatalogBench · Reliably publish-ready · sales brief% of products, higher is better 21.4%Claude Opus 5.5 · 7 of 201.8%Kimi K3 · 16 of 20
Professional work
APEX-Agents · Tasks passed% of tasks, higher is better 75.5%Claude Sonnet 5.5 · 1 of 3750.6%Kimi K3 · 21 of 37
GDP.pdf · Professional document tasks% of rubric, higher is better 30.6%Claude Opus 5.5 · 2 of 3119.0%Kimi K3 · 17 of 31
Reasoning and knowledge
Artificial Analysis · Artificial Analysis Intelligence Indexindex score, higher is better 57.6Claude Opus 5.5 · 1 of 19843.6Kimi K3 · 16 of 198
Artificial Analysis · Humanity's Last Exam% of questions, higher is better 61.4%Claude Opus 5.5 · 1 of 19746.9%Kimi K3 · 16 of 197
Artificial Analysis · GPQA Diamond% of questions, higher is better 93.7%Claude Fable 5.1 · 8 of 18793.5%Kimi K3 · 10 of 187
Speed under pressure
BulletBench · Ladder Elo · Bullet 60sladder Elo, higher is better 445Claude Haiku 4.5 · 10 of 2033Kimi K3 · 17 of 20
Sticking to the facts
Vectara Hallucination Leaderboard · Hallucination rate · Vectara% of summaries, lower is better 9.8%Claude Haiku 4.5 · 43 of 7910.8%Kimi K2.6 · 52 of 79
Arena (formerly LMArena) · Overall · Text factualityArena rating, higher is better 1,507Claude Opus 5.5 · 1 of 1131,472Kimi K3 · 16 of 113
SimpleQA Verified (Epoch AI) · Correct answers% of questions, higher is better 72.2%Claude Opus 5.5 · 4 of 7350.6%Kimi K3 · 23 of 73
Writing
Arena (formerly LMArena) · Overall · TextArena rating, higher is better 1,505Claude Opus 4.6 · 1 of 1661,488Kimi K3 · 11 of 166
UGI Leaderboard · Writing score · UGIscore out of 100, higher is better 74.2Claude Fable 5 · 3 of 13864.4Kimi K2.6 · 25 of 138

Their models, one against one

Quick answers

Is Anthropic or Moonshot AI better?

Anthropic is ahead: its best models beat Moonshot AI's in all 9 kinds of work both are measured on.

What is Anthropic's best model?

Claude Opus 5.5: #1 on the Spring Prompt overall leaderboard and 57.6 on the Artificial Analysis Intelligence Index.

What is Moonshot AI's best model?

Kimi K3: #10 on the Spring Prompt overall leaderboard and 43.6 on the Artificial Analysis Intelligence Index.

Which is better for agents and tool use, Anthropic or Moonshot AI?

Anthropic: its best model there, Claude Sonnet 5.5, ranks 1 of 164 models on sale, against 19 for Moonshot AI's Kimi K2 (0711).

Which is better for reasoning and knowledge, Anthropic or Moonshot AI?

Anthropic: its best model there, Claude Opus 5.5, ranks 1 of 198 models on sale, against 15 for Moonshot AI's Kimi K3.

Which is better for writing, Anthropic or Moonshot AI?

Anthropic: its best model there, Claude Fable 5, ranks 1 of 188 models on sale, against 11 for Moonshot AI's Kimi K3.

Which is cheaper, Anthropic or Moonshot AI?

Anthropic's cheapest model with results, Claude Haiku 5.5, costs $0.20 per million tokens (three input to one output), against $1.00 for Kimi K2 (0711) from Moonshot AI.

Other labs compared

Which model is best for your product?

Benchmarks aren't your data. We test the models from Anthropic, Moonshot AI and the rest on your own tasks, with the cost of every answer.

Talk to usSee the leaderboard