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Head-to-head comparison

Olmo 3.1 7B RL Zero Math vs Llama 3.1 8B Instruct

Olmo 3.1 7B RL Zero Math (Allen Institute) and Llama 3.1 8B Instruct (Meta) 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 15 September 2026

As of 15 September 2026, Olmo 3.1 7B RL Zero Math holds the stronger ModelCap Index position (#211 vs #213); and Olmo 3.1 7B RL Zero Math ships open weights.

Which should you choose?

Choose Olmo 3.1 7B RL Zero Math if…

  • you want the stronger overall ModelCap Index position — #211 against #213 (9.0 vs 7.5 points).
  • you want to self-host: Olmo 3.1 7B RL Zero Math ships open weights while Llama 3.1 8B Instruct is gated access.
  • you want the more recently listed model — Olmo 3.1 7B RL Zero Math was listed 12 December 2025, Llama 3.1 8B Instruct 23 July 2024.

Choose Llama 3.1 8B Instruct if…

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

Olmo 3.1 7B RL Zero Math vs Llama 3.1 8B Instruct: specs, pricing and context

Specification comparison of Olmo 3.1 7B RL Zero Math and Llama 3.1 8B Instruct
FieldOlmo 3.1 7B RL Zero MathAllen InstituteLlama 3.1 8B InstructMeta
ModelCap Index position#211#213
Index score9.07.5
EvidenceInheritedMeasured
Input price / 1M tokensUnlisted$0.05
Output price / 1M tokensUnlisted$0.08
Context window— tokens131K tokens
Max output tokens—118K
API providers listed05
Weight accessOpen weightsGated access
Input modalitiesTextText
First listed12 December 202523 July 2024
PublisherAllen InstituteMeta

Evidence: finetune of allenai/Olmo-3-1025-7B · finetune (100%) · 2 public benchmark observations across 2 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Olmo 3.1 7B RL Zero Math vs Llama 3.1 8B Instruct

Public benchmark boards where Olmo 3.1 7B RL Zero Math or Llama 3.1 8B Instruct has a published result
BoardOlmo 3.1 7B RL Zero MathLlama 3.1 8B InstructLeads
Arena codingArena (LMArena)—12601252–1267Only one result
BFCL V4UC Berkeley (Gorilla)—25.8PromptOnly 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.

Olmo 3.1 7B RL Zero Math vs Llama 3.1 8B Instruct: common questions

Is Olmo 3.1 7B RL Zero Math better than Llama 3.1 8B Instruct?

Olmo 3.1 7B RL Zero Math ranks higher on the ModelCap Index as of 15 September 2026: #211 against #213. 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 Olmo 3.1 7B RL Zero Math cheaper than Llama 3.1 8B 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, Olmo 3.1 7B RL Zero Math or Llama 3.1 8B Instruct?

Both publish a —-token context window.

Which is better for coding, Olmo 3.1 7B RL Zero Math or Llama 3.1 8B 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 Olmo 3.1 7B RL Zero Math and Llama 3.1 8B Instruct open-weight models?

Olmo 3.1 7B RL Zero Math: Open weights. Llama 3.1 8B Instruct: Gated access. 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 Olmo 3.1 7B RL Zero Math and Llama 3.1 8B Instruct?

ModelCap currently lists 0 API providers for Olmo 3.1 7B RL Zero Math and 5 for Llama 3.1 8B Instruct, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Olmo 3.1 7B RL Zero Math vs Llama 3.1 8B Instruct comparison?

Every figure comes from the sealed ModelCap dataset published 15 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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