Models

anthropic-opus-4-6 vs kimi-k3

Output tokens cost $25.00 per million on anthropic-opus-4-6 and $15.00 per million on kimi-k3. Input tokens cost $5.00 per million on anthropic-opus-4-6 and $3.00 per million on kimi-k3. Cached input tokens are billed at $0.50 per million on anthropic-opus-4-6 and $0.30 per million on kimi-k3. Context lengths are 200,000 tokens on anthropic-opus-4-6 and 1,048,576 tokens on kimi-k3. Time to first token (TTFT) measured on AIHubMix is 3.1s on anthropic-opus-4-6 and 12.9s on kimi-k3. Measured output throughput is 39.7 tok/s on anthropic-opus-4-6 and 18.8 tok/s on kimi-k3. On the LMArena coding leaderboard anthropic-opus-4-6 scores 1548 and kimi-k3 scores 1531.

Anthropicanthropic-opus-4-6Moonshot AIkimi-k3
Anthropic logo
anthropic-opus-4-6
Anthropic · text, image → text

Claude Opus 4.6 is Anthropic’s latest state-of-the-art reasoning model. It features an adaptive “thinking” mode that dynamically decides when to think and how much to think. At the default effort level (high), Claude will almost always engage in thinking. At lower effort levels, it may skip thinking for simple problems. ⚠️ The minimum cache token for claude-opus-4-6 has been increased from 1,024 to 4,096 tokens.

Input$5.00 /M
Output$25.00 /M
Moonshot AI logo
kimi-k3
Moonshot AI · text, image, video → text

Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.

Input$3.00 /M
Output$15.00 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

anthropic-opus-4-6
kimi-k3
Input /M
$5.00
$3.00
Output /M
$25.00
$15.00
Cache read /M
$0.50
$0.30
Context length
200,000
1,048,576
Max output
32,000
1,048,576
Time to First Token
3.1 s
12.9 s
Throughput
39.7 tok/s
18.8 tok/s
Modalities
textimage
textimagevideo
Supported Parameters
thinkingtoolsfunction callingstructured outputs
thinkingfunction callingstructured outputs
API Formats

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

anthropic-opus-4-6kimi-k3

Tokens / day

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Requests / day

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Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

anthropic-opus-4-6kimi-k3

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
anthropic-opus-4-6kimi-k3
1440148015201560
Overall
14861499
Coding
15311548
Math
15041504
Hard prompts
15051528
Instruction following
14791501
Multi-turn
14991510
Creative writing
14701478
Longer query
15021519
Chinese
15271549
English
14911508

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

kimi-k3
$405 /mo
anthropic-opus-4-6
$675 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: anthropic-opus-4-6, kimi-k3?

kimi-k3: $15.00/M output tokens; anthropic-opus-4-6: $25.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

anthropic-opus-4-6: 1548; kimi-k3: 1531 (LMArena coding leaderboard).

Which responds faster?

anthropic-opus-4-6: 3.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

anthropic-opus-4-6 accepts 200,000 and kimi-k3 accepts 1,048,576 input tokens. Maximum output per request is 32,000 tokens on anthropic-opus-4-6 and 1,048,576 tokens on kimi-k3.

Which one generates tokens faster?

anthropic-opus-4-6 at 39.7 tok/s and kimi-k3 at 18.8 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

anthropic-opus-4-6 accepts text and image input and supports thinking, tool calling, function calling and structured outputs; kimi-k3 accepts text, image and video input and supports thinking, function calling and structured outputs.

Can I call anthropic-opus-4-6 and kimi-k3 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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