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Head-to-head comparison

Llama 3.1 8B Instruct vs Phi mini MoE instruct

Llama 3.1 8B Instruct (Meta) and Phi mini MoE instruct (Microsoft) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 23 September 2026

As of 23 September 2026, Phi mini MoE instruct holds the stronger ModelCap Index position (#223 vs #224); and Phi mini MoE instruct ships open weights.

Which should you choose?

Choose Llama 3.1 8B Instruct if…

  • you want provider choice — 5 listed API providers against 0.

Choose Phi mini MoE instruct if…

  • you want the stronger overall ModelCap Index position — #223 against #224 (10.6 vs 10.4 points).
  • you want to self-host: Phi mini MoE instruct ships open weights while Llama 3.1 8B Instruct is gated access.
  • you want the more recently listed model — Phi mini MoE instruct was listed 23 June 2025, Llama 3.1 8B Instruct 23 July 2024.

Llama 3.1 8B Instruct vs Phi mini MoE instruct: specs, pricing and context

Specification comparison of Llama 3.1 8B Instruct and Phi mini MoE instruct
FieldLlama 3.1 8B InstructMetaPhi mini MoE instructMicrosoft
ModelCap Index position#224#223
Index score10.410.6
EvidenceMeasuredEstimated
Input price / 1M tokens$0.05Unlisted
Output price / 1M tokens$0.08Unlisted
Context window131K tokens— tokens
Max output tokens118K—
API providers listed50
Weight accessGated accessOpen weights
Input modalitiesTextText
First listed23 July 202423 June 2025
PublisherMetaMicrosoft

Evidence: 2 public benchmark observations across 2 boards · publisher-corpus-prior over 215 held-out anchors (68%); launch card against 4 resolved peers on 3 rows (32%); exceeds every named peer on 3 of 3 rows; optimism haircut 6.91 from cross-lab-probe; shrunk 7.6 toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Llama 3.1 8B Instruct vs Phi mini MoE instruct

Public benchmark boards where Llama 3.1 8B Instruct or Phi mini MoE instruct has a published result
BoardLlama 3.1 8B InstructPhi mini MoE instructLeads
Arena codingArena (LMArena)12601252–1267—Only one result
BFCL V4UC Berkeley (Gorilla)25.8Prompt—Only one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Llama 3.1 8B Instruct vs Phi mini MoE instruct: common questions

Is Llama 3.1 8B Instruct better than Phi mini MoE instruct?

Phi mini MoE instruct ranks higher on the ModelCap Index as of 23 September 2026: #223 against #224. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Llama 3.1 8B Instruct cheaper than Phi mini MoE instruct?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Llama 3.1 8B Instruct or Phi mini MoE instruct?

Both publish a 131K-token context window.

Which is better for coding, Llama 3.1 8B Instruct or Phi mini MoE instruct?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Llama 3.1 8B Instruct and Phi mini MoE instruct open-weight models?

Llama 3.1 8B Instruct: Gated access. Phi mini MoE instruct: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Llama 3.1 8B Instruct and Phi mini MoE instruct?

ModelCap currently lists 5 API providers for Llama 3.1 8B Instruct and 0 for Phi mini MoE instruct, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Llama 3.1 8B Instruct vs Phi mini MoE instruct comparison?

Every figure comes from the sealed ModelCap dataset published 23 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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