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Head-to-head comparison

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

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

As of 15 September 2026, Olmo 3.1 7B RL Zero Math holds the stronger ModelCap Index position (#211 vs #214); 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 #214 (9.0 vs 6.3 points).
  • you want to self-host: Olmo 3.1 7B RL Zero Math ships open weights while HARC Llama 3.1 8B Instruct is restricted license.

Choose HARC Llama 3.1 8B Instruct if…

  • you want the more recently listed model — HARC Llama 3.1 8B Instruct was listed 2 July 2026, Olmo 3.1 7B RL Zero Math 12 December 2025.

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

Specification comparison of Olmo 3.1 7B RL Zero Math and HARC Llama 3.1 8B Instruct
FieldOlmo 3.1 7B RL Zero MathAllen InstituteHARC Llama 3.1 8B InstructMicrosoft
ModelCap Index position#211#214
Index score9.06.3
EvidenceInheritedInherited
Input price / 1M tokensUnlistedUnlisted
Output price / 1M tokensUnlistedUnlisted
Context window— tokens— tokens
Max output tokens——
API providers listed00
Weight accessOpen weightsRestricted license
Input modalitiesTextText
First listed12 December 20252 July 2026
PublisherAllen InstituteMicrosoft

Evidence: finetune of allenai/Olmo-3-1025-7B · finetune (100%) · merge of meta-llama/llama-3.1-8b-instruct · merge (100%). 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 HARC Llama 3.1 8B Instruct

Neither model has a published result on a public benchmark board ModelCap tracks yet.

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 HARC Llama 3.1 8B Instruct: common questions

Is Olmo 3.1 7B RL Zero Math better than HARC 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 #214. 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 HARC 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 HARC Llama 3.1 8B Instruct?

Both publish a —-token context window.

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

Olmo 3.1 7B RL Zero Math: Open weights. HARC Llama 3.1 8B Instruct: Restricted license. 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 HARC Llama 3.1 8B Instruct?

ModelCap currently lists 0 API providers for Olmo 3.1 7B RL Zero Math and 0 for HARC 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 HARC 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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