ERNIE 5.1
Language Available Full comparison ↗ baidu/ernie-5.1 · by Baidu
· mixture-of-experts
Pricing — 1 offering(s)
Input tokens (<=32K context)
- $0.59 / 1M tokens (input) Current 2026-07-27 → present
Output tokens (<=32K context)
- $2.66 / 1M tokens (output) Current 2026-07-27 → present
Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.
See how ERNIE 5.1 fits into a cost-aware routing setup
See how →Capability profile
context window strong
reasoning strong
coding unknown
tool use unknown
instruction following unknown
multilingual unknown
speed unknown
cost efficiency unknown
Operator guidance
Baidu's current flagship, first entry for this family in this registry. Independently confirmed strong on general reasoning and math via LMArena Search Arena; no independent coding benchmark or data for other dimensions.
Use cases
- General reasoning, legal/government, and business-domain tasks (top-ranked on LMArena Search Arena in these categories)
- Mathematics-heavy tasks (AIME26: 99.6)
Limitations
- No dedicated coding benchmark found — capabilities.supports_coding deliberately omitted from the companion registry pricing entry rather than guessed
- Total/active parameter counts are third-party estimates, not officially disclosed by Baidu
- Capability ratings beyond context-window/reasoning are unknown — no independent benchmark found for coding/tool-use/instruction-following/multilingual/speed/cost-efficiency as of this backfill
Citations
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