Kimi K2.5 vs o3-pro
At a Glance
| Compare |  Kimi K2.5Moonshot AI |  o3-proOpenAI |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.45Deepinfra ↗ · Aug 29, 2026 | $20.00Openai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $2.25Deepinfra ↗ · Aug 29, 2026 | $80.00Openai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 262K | 200K |
| Model facts checked | Aug 28, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Kimi-K2.5 | o3-pro |
|---|---|---|
| Developer | Moonshot AI | OpenAI |
| Family | Kimi K2 5 | O3 |
| Model | Kimi-K2.5 | o3-pro |
| Version | Kimi-K2.5 | o3-pro |
| Lifecycle | active | active |
| Released | 2026-01-27 | 2025-06-10 |
| Knowledge cutoff | Unknown | 2024-06-01 |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 262K | 200K |
| Total parameters | 1T | Unknown |
| Active parameters | 32B | Unknown |
| License | other | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Deepinfra (Standard), Hugging Face (Standard), Openrouter (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, structured_outputs, tools |
Kimi K2.5 Capabilities
o3-pro Capabilities
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Primary Evidence
Sources and Freshness
Questions
Kimi K2.5 vs o3-pro FAQs
Is Kimi K2.5 or o3-pro better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Kimi K2.5 and o3-pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Kimi K2.5 or o3-pro?+
Kimi K2.5 is $0.45 and o3-pro is $20.00 per million tokens, so Kimi K2.5 is cheaper on this metric. Kimi K2.5 is $2.25 and o3-pro is $80.00 per million tokens, so Kimi K2.5 is cheaper on this metric.
Which has a larger context window, Kimi K2.5 or o3-pro?+
Kimi K2.5 has the larger sourced context window. Kimi K2.5 supports 262K and o3-pro supports 200K.
Which performs better in benchmarks, Kimi K2.5 or o3-pro?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Kimi K2.5 or o3-pro be self-hosted?+
Kimi K2.5 is the only model in this pair currently marked as self-hostable. Kimi K2.5 is open weight; o3-pro is not marked open weight.
Can Kimi K2.5 and o3-pro understand images?+
Kimi K2.5 is documented with image input; o3-pro is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Kimi K2.5 or o3-pro?+
Neither has a larger sourced maximum output. Kimi K2.5 is — and o3-pro is 100K.
Do Kimi K2.5 and o3-pro support reasoning and tool use?+
Kimi K2.5: reasoning, tool calling, and image input. o3-pro: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Kimi K2.5 or o3-pro?+
Kimi K2.5 has 3 sourced provider routes; o3-pro has 2, so Kimi K2.5 has broader tracked availability.
Which offers better value, Kimi K2.5 or o3-pro?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.