BGE Reranker v2 vs Phi-4

Compare BGE Reranker v2 and Phi-4: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

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Feature BGE Reranker v2 Phi-4
CategoryRerankingCompact
Parameters568M14B
Context Window8K16K
Input Price$0.003/1M tokens$0.01/1M tokens
Output PriceN/A/1M tokens$0.02/1M tokens
Latency~30ms~100ms

Choose BGE Reranker v2 when:

  • ✓ RAG reranking
  • ✓ Search improvement
  • ✓ Citation accuracy
Key Strengths:

High precision, Cross-encoder, Improves RAG quality

Choose Phi-4 when:

  • ✓ Edge deployments
  • ✓ Cost-sensitive apps
  • ✓ Classification
Key Strengths:

Very compact, Strong reasoning for size, Extremely low cost

Verdict: BGE Reranker v2 vs Phi-4

For cost efficiency, BGE Reranker v2 wins at $0.003/1M input tokens. For speed, Phi-4 is faster at ~100ms. BGE Reranker v2 excels at RAG reranking while Phi-4 is better for Edge deployments. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

BGE Reranker v2 costs $0.003/1M input tokens and N/A/1M output tokens. Phi-4 costs $0.01 input and $0.02 output. BGE Reranker v2 is 3.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

BGE Reranker v2 has a 8K context window with ~30ms latency. Phi-4 offers 16K context at ~100ms. Phi-4 has the larger context window.

Best For

BGE Reranker v2 (Reranking) is optimized for: RAG reranking, Search improvement, Citation accuracy. Phi-4 (Compact) works best for: Edge deployments, Cost-sensitive apps, Classification.

Try Both on XALEN

Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:

from xalen import XALEN

client = XALEN(api_key="xln_test_YOUR_KEY")

# Use BGE Reranker v2
response_a = client.chat.completions.create(
    model="bge-reranker-v2",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use Phi-4
response_b = client.chat.completions.create(
    model="phi-4",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

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Get API Key Try in Playground

Frequently Asked Questions

Which is better, BGE Reranker v2 or Phi-4?

BGE Reranker v2 (Reranking, 568M) offers High precision. Phi-4 (Compact, 14B) offers Very compact. Choose BGE Reranker v2 for RAG reranking or Phi-4 for Edge deployments.

How much does BGE Reranker v2 cost vs Phi-4?

BGE Reranker v2: $0.003/1M input, N/A/1M output. Phi-4: $0.01/1M input, $0.02/1M output. Both available on XALEN with batch processing at 50% discount.

Can I use both models on XALEN?

Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between BGE Reranker v2 and Phi-4 by changing the model parameter. No code changes needed.

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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.