Kimi K3 vs Solar Pro 4
Kimi K3 leads the LLM Stats Score 54.7 to 36.0. Solar Pro 4 is 11.4x cheaper per token.
Moonshot AI · Upstage · Updated for 2026
Which is better?
Kimi K3 leads the overall LLM Stats Score 54.7 to 36.0, ranking #5 overall.
In the 3 individual benchmarks reported for both models, Kimi K3 wins 3; this is a narrower head-to-head signal than the composite indexes.
On price, Solar Pro 4 is roughly 11.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Kimi K3 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Kimi K3
- overall performance matters — it scores 54.7 and ranks #5 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 3 of 3 exact shared results
- you process long inputs — it offers a 1,048,576 token context window
- you need open weights you can self-host or fine-tune
Choose Solar Pro 4
- cost matters — it's about 11.4x cheaper per token
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
31 reported for Kimi K3 · 9 for Solar Pro 4
Kimi K3 outperforms in 3 benchmarks (BrowseComp, GPQA, Terminal-Bench 2.1), while Solar Pro 4 is better at 0 benchmarks.
Kimi K3 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Kimi K3 ($3.00/1M tokens) is 10.0x more expensive than Solar Pro 4 ($0.30/1M tokens).
For output processing, Kimi K3 ($15.00/1M tokens) is 12.5x more expensive than Solar Pro 4 ($1.20/1M tokens).
In conclusion, Kimi K3 is more expensive than Solar Pro 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Kimi K3 accepts 1,048,576 input tokens compared to Solar Pro 4's 524,288 tokens. Kimi K3 can generate longer responses up to 1,048,576 tokens, while Solar Pro 4 is limited to 131,072 tokens.
Input capabilities
Documented input modalities across available providers
Kimi K3 supports multimodal inputs, whereas Solar Pro 4 does not.
Kimi K3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Kimi K3
Solar Pro 4
License
Usage and distribution terms
Kimi K3 is licensed under Kimi K3 License, while Solar Pro 4 uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Kimi K3 License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Kimi K3 was released on 2026-07-16, while Solar Pro 4 was released on 2026-08-06.
Solar Pro 4 is 1 month newer than Kimi K3.
Jul 16, 2026
1 months ago
Aug 6, 2026
3 weeks ago
3w newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Kimi K3 is available from Fireworks, Moonshot AI, Novita, Together. Solar Pro 4 is available from Upstage.
Kimi K3
Solar Pro 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Kimi K3 and Solar Pro 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Kimi K3 vs Solar Pro 4.