ERNIE 5.1 vs GPT-5.1
Benchmark Performance
Available Benchmarks
| Benchmark | ERNIE 5.1 | GPT-5.1 |
|---|---|---|
| LMArena Search Arenasearch-2026-08-24-011508720696 · arena_rating · leader | 1,226.96100% of row best · rating · ernie-5.1; 95% CI [1217.24505738, 1236.67203321]; votes 3788; rank 6 | 1,199.4498% of row best · rating · gpt-5.1-search; 95% CI [1194.20592738, 1204.68165473]; votes 59909; rank 14 |
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · leader | 1,468.10100% of row best · rating · ernie-5.1; 95% CI [1463.48233336, 1472.72453179]; votes 37137; rank 25 | 1,422.4797% of row best · rating · gpt-5.1; 95% CI [1418.85253526, 1426.08681113]; votes 43002; rank 96 |
| Overall ResultCounted from the protocol-matched rows above | 2 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 | ERNIE 5.1 | GPT-5.1 |
|---|---|---|
| Developer | Baidu | OpenAI |
| Family | Ernie 5 | Gpt 5 1 |
| Model | ERNIE 5.1 | GPT-5.1 |
| Version | ERNIE 5.1 | GPT-5.1 |
| Lifecycle | active | active |
| Released | Unknown | 2025-11-13 |
| Knowledge cutoff | Unknown | 2024-09-30 |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
| Context window | 131K | 400K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Baidu Qianfan (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | agents, chat, reasoning, search, tools | chat, generation, reasoning, structured_outputs, tools |
13 comparable fields · 8 material differences · Pair passes the primary-source comparison gate
ERNIE 5.1 Capabilities
GPT-5.1 Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
 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 |
ERNIE 5.1Baidu | vs |  Kimi-K3Moonshot AI | 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 GPT-5.1 FAQs
Is ERNIE 5.1 or GPT-5.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both ERNIE 5.1 and GPT-5.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, ERNIE 5.1 or GPT-5.1?+
ERNIE 5.1 is $4.00 and GPT-5.1 is $1.25 per million tokens, so GPT-5.1 is cheaper on this metric. ERNIE 5.1 is $18.00 and GPT-5.1 is $10.00 per million tokens, so GPT-5.1 is cheaper on this metric.
Which has a larger context window, ERNIE 5.1 or GPT-5.1?+
GPT-5.1 has the larger sourced context window. ERNIE 5.1 supports 131K and GPT-5.1 supports 400K.
Which performs better in benchmarks, ERNIE 5.1 or GPT-5.1?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can ERNIE 5.1 or GPT-5.1 be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. ERNIE 5.1 is not marked open weight; GPT-5.1 is not marked open weight.
Can ERNIE 5.1 and GPT-5.1 understand images?+
ERNIE 5.1 is not documented with image input; GPT-5.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, ERNIE 5.1 or GPT-5.1?+
GPT-5.1 has the larger sourced maximum output: ERNIE 5.1 supports 66K and GPT-5.1 supports 128K output tokens.
Do ERNIE 5.1 and GPT-5.1 support reasoning and tool use?+
ERNIE 5.1: reasoning and tool calling. GPT-5.1: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, ERNIE 5.1 or GPT-5.1?+
ERNIE 5.1 has 1 sourced provider route; GPT-5.1 has 2, so GPT-5.1 has broader tracked availability.
Which offers better value, ERNIE 5.1 or GPT-5.1?+
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.