ERNIE 5.1 vs Phi-4 Reasoning

This comparison does not currently contain a protocol-matched coding benchmark for both ERNIE 5.1 and Phi-4 Reasoning, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Only ERNIE 5.1 has a directly sourced input price: $4.00 per million tokens. Only ERNIE 5.1 has a directly sourced output price: $18.00 per million tokens.

ERNIE 5.1 has the larger sourced context window. ERNIE 5.1 supports 131K and Phi-4 Reasoning supports 33K.

There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.

Phi-4 Reasoning is the only model in this pair currently marked as self-hostable. ERNIE 5.1 is not marked open weight; Phi-4 Reasoning is open weight.

ERNIE 5.1 is not documented with image input; Phi-4 Reasoning is not documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. ERNIE 5.1 is 66K and Phi-4 Reasoning is —.

ERNIE 5.1: reasoning and tool calling. Phi-4 Reasoning: reasoning. Feature support does not establish relative quality.

ERNIE 5.1 has 1 sourced provider route; Phi-4 Reasoning has 0, so ERNIE 5.1 has broader tracked availability.

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.