Phaseo

Claude Opus 5 vs Kimi K3.1 Pro

Pick a route and service tier under each model. Prices, the calculator and the verdicts follow your choice.

Try Claude Opus 5 in Chat
Claude Opus 5
Kimi K3.1 Pro

At a glance

Generated from the rows below

Choose Claude Opus 5 for

No clear lead on the rows below.

Choose Kimi K3.1 Pro for

  • The lowest cost per typical request ($0.009)
  • The largest context window: 1,048,576 tokens
  • The only one that takes video

Overview

Lab
Anthropic
Moonshot
Context window
1Mtokens
1.05Mtokens (best)
Max output
128Ktokens
1.05Mtokens (best)
Takes
Text, Image
Text, Image, Video
Returns
Text
Text
Routes on Phaseo
7 providers
17 providers
+9 (best)
Released
24 Jul 2026
23 Oct 2026

Pricing

Prices on the route and tier chosen under each model

Anthropic · StandardMoonshot AI · Standard
Input
$5.00/ 1M tokensRegion: US$5.50
$2.00/ 1M tokens (best)
Output
$25.00/ 1M tokensRegion: US$27.50
$10.00/ 1M tokens (best)
Cache read
$0.50/ 1M tokensRegion: US$0.55
$0.20/ 1M tokens (best)
Cache write, 5 minutes
$6.25/ 1M tokensRegion: US$6.875
$2.00/ 1M tokens (best)
Cache write, 1 hour
$10.00/ 1M tokensRegion: US$11.00
$4.00/ 1M tokens (best)
Typical request2K tokens in, 500 out
$0.0225
$0.009 (best)

What will it cost?

Estimate a month of requests on the route and tier chosen for each model

ModelPer requestPer month
Claude Opus 5Anthropic · Standard$0.0225$675.00
Kimi K3.1 ProMoonshot AI · Standard$0.009$270.00

Uses the route and tier chosen under each model, over 30 days. Cached input is billed at the cache-read rate.

Performance

Live gateway traffic

Latency p50
No traffic in the last 5 days
No traffic in the last 5 days
Throughput p50
No traffic in the last 5 days
No traffic in the last 5 days
Requests, last 24 hours
None in the last 24 hours
None in the last 24 hours

Activity

Tokens sent through Phaseo each day over the last 30 days

None of these models has had traffic through Phaseo in the last 30 days.

Features

Features from the parameters Phaseo routes support

Tool calling
Yes
Yes
Structured outputs
Yes
Yes
Reasoning effort
Yes
Yes
Web search
Yes
Yes
Prompt cachingon the chosen route
Yes
Yes
Quantisationon the chosen route
Not stated
Not stated

Benchmarks

Only results that two or more of the selected models report get a row

Compare at effort

Artificial Analysis Intelligence Index Independent

Higher is better · at Max effort · 1 of 2 models tested

Claude Opus 550.8
Kimi K3.1 Pro55.1

Where they rank

The five leaders on each capability index, then the compared models. Each model at its best-scoring setting.

Artificial Analysis Intelligence Index52 models ranked

  1. #1Claude Opus 5.559.1
  2. #2GPT-6 Astra56.9
  3. #3GPT-6.1 Sol54.6
  4. #4Claude Sonnet 5.554.5
  5. #5GPT-6.1 Terra51.3
  6. #9Kimi K3.1 Pro46.5
  7. #10Claude Opus 544.2

Artificial Analysis Coding Index171 models ranked

  1. #1Claude Fable 5.181.6
  2. #2GPT 5.6 Sol78.3
  3. #3Claude Opus 578.0
  4. #4GPT-6 Astra77.1
  5. #5Grok 4.676.8

Artificial Analysis Agentic Index112 models ranked

  1. #1Claude Fable 5.157.9
  2. #2Claude Opus 556.5
  3. #3Qwen 3.8 Max 090256.0
  4. #4Muse Spark 1.355.5
  5. #5Qwen 3.8 Flash Next53.6

Epoch Capabilities Index164 models ranked

  1. #1GPT-6 Astra169.1
  2. #2GPT-6.1 Sol168.9
  3. #3Claude Opus 5.5168.4
  4. #4GPT-6.1 Terra167.8
  5. #5Claude Fable 5.1166.9
  6. #8Claude Opus 5164.4
Cost
Artificial Analysis Evaluation Cost (USD)matched by effort level · lower is better
$7,275
$3,117 (best)
Artificial Analysis Evaluation Cost (USD)matched by effort level · lower is better
$9,010
$3,153 (best)
General
Artificial Analysis Intelligence Indexmatched by effort level
44.2
46.5 (best)
Artificial Analysis Progress Index v1matched by effort level
333.7
340.7 (best)

Lab-reported results come from each lab’s own launch materials and may use different settings, so none is marked best. Independent results come from third-party evaluators.

Providers

Where each model runs on Phaseo, with standard-tier prices per 1M tokens. Providers that serve more of these models come first.

DeepInfra
$5.00 in · $25.00 out1M context
$2.00 in · $10.00 out (best)1.05M context · Standard, Flex, Priority
Inference.net
$5.00 in · $25.00 out1M context
$2.00 in · $10.00 out (best)1.05M context
Venice
$10.00 in · $50.00 out$10.00 per 1K requests Web search1M context · Priority
$2.00 in · $10.00 out$10.00 per 1K requests Native web search requests1M context · Standard, Priority
Anthropic
$5.00 in · $25.00 out$10.00 per 1K requests Native web search requests1M context · Standard, Batch, Priority
—
Moonshot AI
—
$2.00 in · $10.00 out1.05M context · Standard, Priority
AkashML
—
$2.00 in · $10.00 out1.05M context
Amazon Bedrock
$5.00 in · $25.00 out1M context
—
AtlasCloud
—
$2.00 in · $10.00 out1.05M context
Baseten
—
$2.00 in · $10.00 out1.05M context
Google Vertex
$5.00 in · $25.00 out1M context
—
Also listed, not routed
22 providers
4 providers

To price the whole page on one of these providers, pick it under the model’s name at the top.

Details

Knowledge cutoff
Jan 2026
Not published
Status
Available
Available
Licence
Proprietary
Modified MIT
Subscription plans
19 plansClaude Enterprise, Claude Max, Claude Max 5x…
None mapped
API docs
Not published
Not published

Claude Opus 5 vs Kimi K3.1 Pro: side-by-side summary

Claude Opus 5 and Kimi K3.1 Pro are both available through the Phaseo API, so switching between them is a change of model id rather than a new integration.

Claude Opus 5 is from Anthropic. It has a 1,000,000-token context window. On its cheapest route it costs $5.00 per 1M input tokens and $25.00 per 1M output tokens.

Kimi K3.1 Pro is from Moonshot. It has a 1,048,576-token context window. On its cheapest route it costs $2.00 per 1M input tokens and $10.00 per 1M output tokens.

Claude Opus 5 model details, providers and pricingKimi K3.1 Pro model details, providers and pricing

Claude Opus 5 vs Kimi K3.1 Pro at a glance

Claude Opus 5 and Kimi K3.1 Pro compared on price, context window and benchmark score
AttributeClaude Opus 5Kimi K3.1 Pro
LabAnthropicMoonshot
Input price per 1M tokens$5.00$2.00
Output price per 1M tokens$25.00$10.00
Context window1,000,000 tokens1,048,576 tokens
Max output128,000 tokens1,048,576 tokens
Artificial Analysis Intelligence Index44.2 (#10)46.5 (#9)

Prices are each model's cheapest standard route on Phaseo. Benchmark ranks use each model's best-scoring evaluated setting.

Frequently asked questions

Which is cheaper, Claude Opus 5 or Kimi K3.1 Pro?

Kimi K3.1 Pro is cheaper for both input and output tokens. Claude Opus 5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens; Kimi K3.1 Pro costs $2.00 and $10.00, each on its cheapest standard route on Phaseo.

Which has the longer context window, Claude Opus 5 or Kimi K3.1 Pro?

Kimi K3.1 Pro has the longer context window at 1,048,576 tokens, compared with 1,000,000 tokens for Claude Opus 5.

Which scores higher on the Artificial Analysis Intelligence Index, Claude Opus 5 or Kimi K3.1 Pro?

Kimi K3.1 Pro scores higher on the Artificial Analysis Intelligence Index. Kimi K3.1 Pro scores 46.5, ranked #9 of 52. Claude Opus 5 scores 44.2, ranked #10 of 52.

Can I use Claude Opus 5 and Kimi K3.1 Pro through one API?

Yes. Both are served through the Phaseo API, so you can switch between them by changing the model id.

Help keep public data accurate

See something missing, incorrect, or out of date? Tell us about this page.