ERNIE 5.1 vs Kimi K3
Model Markets Rankings
Intelligence, Cost, and Efficiency
| Ranking | ERNIE 5.1 | Kimi-K3 |
|---|---|---|
| CostLower is better · Published-token output estimate | UnrankedNot in the 36-model eligible cohort | #24 of 36$0.194 per LiveBench case |
Ranks come from the current complete eligible cohorts. Green highlights appear only when both models are ranked in the same metric. Missing required inputs remain unranked, and the three dimensions are not collapsed into an overall winner.
Benchmark Performance
Available Benchmarks
| Benchmark | ERNIE 5.1 | Kimi-K3 |
|---|---|---|
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · statistical tie | 1,468.1099% of row best · rating · ernie-5.1; 95% CI [1463.48233336, 1472.72453179]; votes 37137; rank 25 | 1,476.31100% of row best · rating · kimi-k3-max; 95% CI [1470.86166728, 1481.76254962]; votes 17895; rank 16 |
| Overall ResultCounted from the protocol-matched rows above · 1 tie | 0 benchmark winsTied overall | 0 benchmark winsTied overall |
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 | ERNIE 5.1 | Kimi-K3 |
|---|---|---|
| Developer | Baidu | Moonshot AI |
| Family | Ernie 5 | Kimi K3 |
| Model | ERNIE 5.1 | Kimi-K3 |
| Version | ERNIE 5.1 | Kimi-K3 |
| Lifecycle | active | active |
| Released | Unknown | 2026-07-16 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 131K | 1,049K |
| Total parameters | Unknown | 2.8T |
| Active parameters | Unknown | 104B |
| License | Unknown | other |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Baidu Qianfan (Standard) | Deepinfra (Standard), Fireworks Ai (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Standard) |
| Capabilities | agents, chat, reasoning, search, tools | chat, generation, reasoning |
13 comparable fields · 10 material differences · Pair passes the primary-source comparison gate
ERNIE 5.1 Capabilities
Kimi K3 Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
 ERNIE 5.1Baidu | vs |  Kimi-K2.6Moonshot AI | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  GPT-6 AstraOpenAI | cross-developer peerstext |
Claude Fable 5.1Anthropic | vs | ERNIE 5.1Baidu | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  Gemini 3.1 ProGoogle DeepMind | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  DeepSeek-V4-ProDeepSeek | cross-developer peerstext |
ERNIE 5.1Baidu | vs | Grok 4.6xAI | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  Qwen3.8-MaxQwen | cross-developer peerstext |
 MiniMax-M3MiniMax | vs | ERNIE 5.1Baidu | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  GLM-5.3Z.ai | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  Hy4 previewTencent | cross-developer peerstext |
ERNIE 5.1Baidu | vs | Seed 2.1 ProByteDance Seed | cross-developer peerstext |
ERNIE 5.1Baidu | vs |  Mistral Large 3Mistral AI | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
ERNIE 5.1 vs Kimi K3 FAQs
Is ERNIE 5.1 or Kimi K3 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both ERNIE 5.1 and Kimi K3, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, ERNIE 5.1 or Kimi K3?+
ERNIE 5.1 is $4.00 and Kimi K3 is $2.85 per million tokens, so Kimi K3 is cheaper on this metric. ERNIE 5.1 is $18.00 and Kimi K3 is $14.25 per million tokens, so Kimi K3 is cheaper on this metric.
Which has a larger context window, ERNIE 5.1 or Kimi K3?+
Kimi K3 has the larger sourced context window. ERNIE 5.1 supports 131K and Kimi K3 supports 1,049K.
Which performs better in benchmarks, ERNIE 5.1 or Kimi K3?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can ERNIE 5.1 or Kimi K3 be self-hosted?+
Kimi K3 is the only model in this pair currently marked as self-hostable. ERNIE 5.1 is not marked open weight; Kimi K3 is open weight.
Can ERNIE 5.1 and Kimi K3 understand images?+
ERNIE 5.1 is not documented with image input; Kimi K3 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, ERNIE 5.1 or Kimi K3?+
Neither has a larger sourced maximum output. ERNIE 5.1 is 66K and Kimi K3 is —.
Do ERNIE 5.1 and Kimi K3 support reasoning and tool use?+
ERNIE 5.1: reasoning and tool calling. Kimi K3: reasoning and image input. Feature support does not establish relative quality.
Which is available from more inference providers, ERNIE 5.1 or Kimi K3?+
ERNIE 5.1 has 1 sourced provider route; Kimi K3 has 5, so Kimi K3 has broader tracked availability.
Which offers better value, ERNIE 5.1 or Kimi K3?+
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.