Kimi K3 vs GPT-5.4 Mini
Benchmark Performance
Available Benchmarks
| Benchmark | Kimi-K3 | GPT-5.4 Mini |
|---|---|---|
| ARC-AGI-1verified-v1-2aa739d957fc · verified_score · leader | 94.50100% of row best · percent · Kimi K3 (Max) | 63.6767% of row best · percent · GPT-5.4 Mini (XHigh) |
| ARC-AGI-2verified-v2-b5cb5ec6e8c7 · verified_score · leader | 60.42100% of row best · percent · Kimi K3 (Max) | 18.9031% of row best · percent · GPT-5.4 Mini (XHigh) |
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · leader | 1,476.31100% of row best · rating · kimi-k3-max; 95% CI [1470.86166728, 1481.76254962]; votes 17895; rank 16 | 1,412.1096% of row best · rating · gpt-5.4-mini-high; 95% CI [1408.28461201, 1415.92470838]; votes 59472; rank 123 |
| LiveBench2026-06-25 · overall · leader | 81.02100% of row best · percent · kimi-k3 · 13,647 output tokens / case | 69.5386% of row best · percent · gpt-5.4-mini-xhigh · 47,448 output tokens / case |
| ToneBench2026-08-28-10-task-cd9819ab6e4d · overall_score · leader | 88.19100% of row best · points · Kimi K3 · 15,023 output tokens / case | 80.4491% of row best · points · GPT-5.4 mini · 2,559 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above | 5 benchmark winsOverall lead | 0 benchmark wins |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Technical Differences
Side-by-Side Facts
| Field | Kimi-K3 | GPT-5.4 Mini |
|---|---|---|
| Developer | Moonshot AI | OpenAI |
| Family | Kimi K3 | Gpt 5 4 |
| Model | Kimi-K3 | GPT-5.4 Mini |
| Version | Kimi-K3 | GPT-5.4 Mini |
| Lifecycle | active | active |
| Released | 2026-07-16 | 2026-03-17 |
| Knowledge cutoff | Unknown | 2025-08-31 |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,049K | 400K |
| Total parameters | 2.8T | Unknown |
| Active parameters | 104B | Unknown |
| License | other | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Deepinfra (Standard), Fireworks Ai (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning | chat, generation, reasoning, structured_outputs, tools |
14 comparable fields · 10 material differences · Pair passes the primary-source comparison gate
Kimi K3 Capabilities
GPT-5.4 Mini Capabilities
Internal Comparison Graph
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Primary Evidence
Sources and Freshness
Questions
Kimi K3 vs GPT-5.4 Mini FAQs
Is Kimi K3 or GPT-5.4 Mini better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Kimi K3 and GPT-5.4 Mini, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Kimi K3 or GPT-5.4 Mini?+
Kimi K3 is $2.85 and GPT-5.4 Mini is $0.75 per million tokens, so GPT-5.4 Mini is cheaper on this metric. Kimi K3 is $14.25 and GPT-5.4 Mini is $4.50 per million tokens, so GPT-5.4 Mini is cheaper on this metric.
Which has a larger context window, Kimi K3 or GPT-5.4 Mini?+
Kimi K3 has the larger sourced context window. Kimi K3 supports 1,049K and GPT-5.4 Mini supports 400K.
Which performs better in benchmarks, Kimi K3 or GPT-5.4 Mini?+
Kimi K3 leads the current overall benchmark count. The result uses 5 protocol-matched benchmarks from 4 publishers; it is not a universal quality score.
Can Kimi K3 or GPT-5.4 Mini be self-hosted?+
Kimi K3 is the only model in this pair currently marked as self-hostable. Kimi K3 is open weight; GPT-5.4 Mini is not marked open weight.
Can Kimi K3 and GPT-5.4 Mini understand images?+
Kimi K3 is documented with image input; GPT-5.4 Mini is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Kimi K3 or GPT-5.4 Mini?+
Neither has a larger sourced maximum output. Kimi K3 is — and GPT-5.4 Mini is 128K.
Do Kimi K3 and GPT-5.4 Mini support reasoning and tool use?+
Kimi K3: reasoning and image input. GPT-5.4 Mini: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Kimi K3 or GPT-5.4 Mini?+
Kimi K3 has 5 sourced provider routes; GPT-5.4 Mini has 2, so Kimi K3 has broader tracked availability.
Which offers better value, Kimi K3 or GPT-5.4 Mini?+
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.