MolmoAct2 Pretrain vs Llama 3.1 405B Instruct
At a Glance
| Compare | ||
|---|---|---|
| Pricing and Limits | ||
| Context windowMaximum documented tokens | 16K | 131K |
| Model facts checked | Aug 28, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | MolmoAct2-Pretrain | Llama-3.1-405B-Instruct |
|---|---|---|
| Developer | Ai2 | Meta |
| Family | Molmoact2 Pretrain | Llama 3 1 405b Instruct |
| Model | MolmoAct2-Pretrain | Llama-3.1-405B-Instruct |
| Version | MolmoAct2-Pretrain | Llama-3.1-405B-Instruct |
| Lifecycle | active | active |
| Released | Unknown | 2024-07-23 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Model-specific input | Text |
| Output modalities | Model-specific input | Text |
| Context window | 16K | 131K |
| Total parameters | 4.9B | 405.9B |
| Active parameters | Unknown | Unknown |
| License | Unknown | llama3.1 |
| Open weights | Yes | Yes |
| API available | Unknown | Yes |
| Self-hostable | Yes | Yes |
| Provider access | Unknown | Together Ai (Standard) |
| Capabilities | robot_action_generation | chat, generation, tools |
MolmoAct2 Pretrain Capabilities
Llama 3.1 405B Instruct Capabilities
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Primary Evidence
Sources and Freshness
Questions
MolmoAct2 Pretrain vs Llama 3.1 405B Instruct FAQs
Is MolmoAct2 Pretrain or Llama 3.1 405B Instruct better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both MolmoAct2 Pretrain and Llama 3.1 405B Instruct, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
Neither model has a directly sourced input price in this comparison. Neither model has a directly sourced output price in this comparison.
Which has a larger context window, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
Llama 3.1 405B Instruct has the larger sourced context window. MolmoAct2 Pretrain supports 16K and Llama 3.1 405B Instruct supports 131K.
Which performs better in benchmarks, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can MolmoAct2 Pretrain or Llama 3.1 405B Instruct be self-hosted?+
Both models have the same recorded self-hosting status: supported. MolmoAct2 Pretrain is open weight; Llama 3.1 405B Instruct is open weight.
Can MolmoAct2 Pretrain and Llama 3.1 405B Instruct understand images?+
MolmoAct2 Pretrain is not documented with image input; Llama 3.1 405B Instruct is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
Neither has a larger sourced maximum output. MolmoAct2 Pretrain is — and Llama 3.1 405B Instruct is —.
Do MolmoAct2 Pretrain and Llama 3.1 405B Instruct support reasoning and tool use?+
MolmoAct2 Pretrain: none of these features are definitively sourced. Llama 3.1 405B Instruct: tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
MolmoAct2 Pretrain has 0 sourced provider routes; Llama 3.1 405B Instruct has 1, so Llama 3.1 405B Instruct has broader tracked availability.
Which offers better value, MolmoAct2 Pretrain or Llama 3.1 405B Instruct?+
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.