Claude Sonnet 4.5 vs Kimi K3.1 Pro
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on November 14, 2026· 230 models
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.
- Reasoning estimated
- Speed estimated
- ▲
- Input
- Output
- Context
- 1 M tokens
- Max output
- 64 K
- Input, $ per 1M tokens
- $3.00
- Output, $ per 1M tokens
- $15.00
- Cache read, $ per 1M
- $0.300
- Batch (input / output)
- $1.50 / $7.50
- Tool calling
- Yes
- Released
- 09/29/2025
- Knowledge cutoff
- —
- API id
- anthropic/claude-sonnet-4.5
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.
- Reasoning estimated
- ▲
- Speed estimated
- Input
- Output
- Context
- ▲1 M tokens
- Max output
- ▲944 K
- Input, $ per 1M tokens
- ▲$2.00
- Output, $ per 1M tokens
- ▲$10.00
- Cache read, $ per 1M
- $0.200
- Batch (input / output)
- $0.700 / $6.00
- Tool calling
- Yes
- Released
- ▲10/23/2026
- Knowledge cutoff
- —
- API id
- moonshotai/kimi-k3.1-pro
Which is the better API choice: Claude Sonnet 4.5 vs Kimi K3.1 Pro?
- Kimi K3.1 Pro: cheapest input (33% less than Claude Sonnet 4.5)
- Kimi K3.1 Pro: cheapest output
- Kimi K3.1 Pro: largest context (1 M)
- Kimi K3.1 Pro: the newest (10/23/2026)
- Kimi K3.1 Pro: most reasoning (estimated)
- Claude Sonnet 4.5: the fastest (estimated)
Kimi K3.1 Pro costs 33% less on input and 33% less on output than Claude Sonnet 4.5 ($2.00 / $10.00 versus $3.00 / $15.00 per million tokens). Kimi K3.1 Pro accepts more context (1 M). Claude Sonnet 4.5 and Kimi K3.1 Pro offer a batch tier at half price for jobs that do not need an immediate answer.
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
With Kimi K3.1 Pro you save $35.00 a month versus Claude Sonnet 4.5 (33% less).
The 6 cheapest for this scenario (chat, last 12 months)
- 1Lyria 3 Pro Preview Google$0.00
- 2Lyria 3 Clip Preview Google$0.00
- 3Qwen3.7 Flash Qwen$0.97
- 4DeepSeek V4.1 Flash DeepSeek$1.57
- 5DeepSeek V4 Flash 0731 DeepSeek$1.85
- 6Ministral 3 3B 2512 Mistral$1.90
Paste your prompt: tokens and cost per model
Rough estimate (about 4 characters per token). Nothing is sent to any server.
Cost of sending it 1,000 times (input only)
- 1Claude Haiku 5.5 Anthropic$0.008
- 2Kimi K3.1 Pro Moonshot$0.152
- 3Claude Sonnet 5.5 Anthropic$0.152
- 4Claude Sonnet 4.5 Anthropic$0.228
- 5Claude Opus 5.5 Anthropic$0.304
- 6Claude Opus 5 Anthropic$0.380
- 7Claude Fable 5.2 Anthropic$0.608
- 8Claude Fable 5.1 Anthropic$0.760
Popular comparisons
- Claude Fable 5.2 vs GPT-6.1 Terra
- Claude Fable 5.2 vs Gemini 4 Hydrogen
- Claude Fable 5.2 vs DeepSeek V4.1 Flash 1017
- Claude Fable 5.2 vs Grok 4.7
- GPT-6.1 Terra vs Gemini 4 Hydrogen
- GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017
- GPT-6.1 Terra vs Grok 4.7
- Gemini 4 Hydrogen vs DeepSeek V4.1 Flash 1017
- Gemini 4 Hydrogen vs Grok 4.7
- DeepSeek V4.1 Flash 1017 vs Grok 4.7
More free tools
See allFrequently asked questions
Which is the better API choice: Claude Sonnet 4.5 vs Kimi K3.1 Pro?
Kimi K3.1 Pro costs 33% less on input and 33% less on output than Claude Sonnet 4.5 ($2.00 / $10.00 versus $3.00 / $15.00 per million tokens). Kimi K3.1 Pro accepts more context (1 M). Claude Sonnet 4.5 and Kimi K3.1 Pro offer a batch tier at half price for jobs that do not need an immediate answer.
Which is cheaper: Claude Sonnet 4.5 and Kimi K3.1 Pro?
Kimi K3.1 Pro is cheaper: $2.00 per million input tokens and $10.00 per million output tokens, versus $3.00 / $15.00 for Claude Sonnet 4.5.
Which has more context: Claude Sonnet 4.5 and Kimi K3.1 Pro?
Kimi K3.1 Pro accepts 1 M tokens of context; Claude Sonnet 4.5 accepts 1 M.
Which is newer: Claude Sonnet 4.5 and Kimi K3.1 Pro?
Kimi K3.1 Pro was released on 10/23/2026; Claude Sonnet 4.5 on 09/29/2025.
What would 10,000 requests a month cost with Claude Sonnet 4.5 and Kimi K3.1 Pro?
With 1,500 input and 400 output tokens per request: Claude Sonnet 4.5: $105.00; Kimi K3.1 Pro: $70.00 a month, at list price.
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.