MolmoAct2 Think vs Llama 3.1 405B
At a Glance
| Compare |  Llama 3.1 405BMeta | |
|---|---|---|
| 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-Think | Llama-3.1-405B |
|---|---|---|
| Developer | Ai2 | Meta |
| Family | Molmoact2 Think | Llama 3 1 405b |
| Model | MolmoAct2-Think | Llama-3.1-405B |
| Version | MolmoAct2-Think | Llama-3.1-405B |
| 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 | 5.4B | 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 | reasoning, robot_action_generation | generation |
MolmoAct2 Think Capabilities
Llama 3.1 405B Capabilities
Related Comparisons
All text comparisons →| A | Pair | B | Context |
|---|---|---|---|
| vs |  GPT-6 AstraOpenAI | cross-developer peersimage, text | |
| vs | Claude Fable 5.1Anthropic | cross-developer peersimage, text | |
| vs |  Gemini 3.1 ProGoogle DeepMind | cross-developer peerstext | |
| vs |  DeepSeek-V4.1-FlashDeepSeek | cross-developer peersimage, text | |
| vs | Grok 4.6xAI | cross-developer peersimage, text | |
| vs |  Qwen3.8-MaxQwen | cross-developer peersimage, text | |
| vs |  Kimi-K3Moonshot AI | cross-developer peersimage, text | |
 MiniMax-M3MiniMax | vs | cross-developer peersimage, text | |
| vs |  GLM-5.3Z.ai | cross-developer peerstext | |
| vs |  Hy4 previewTencent | cross-developer peerstext | |
| vs | Seed 2.1 ProByteDance Seed | cross-developer peersimage, text | |
| vs |  Mistral Large 3Mistral AI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
MolmoAct2 Think vs Llama 3.1 405B FAQs
Is MolmoAct2 Think or Llama 3.1 405B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both MolmoAct2 Think and Llama 3.1 405B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, MolmoAct2 Think or Llama 3.1 405B?+
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 Think or Llama 3.1 405B?+
Llama 3.1 405B has the larger sourced context window. MolmoAct2 Think supports 16K and Llama 3.1 405B supports 131K.
Which performs better in benchmarks, MolmoAct2 Think or Llama 3.1 405B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can MolmoAct2 Think or Llama 3.1 405B be self-hosted?+
Both models have the same recorded self-hosting status: supported. MolmoAct2 Think is open weight; Llama 3.1 405B is open weight.
Can MolmoAct2 Think and Llama 3.1 405B understand images?+
MolmoAct2 Think is not documented with image input; Llama 3.1 405B is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, MolmoAct2 Think or Llama 3.1 405B?+
Neither has a larger sourced maximum output. MolmoAct2 Think is — and Llama 3.1 405B is —.
Do MolmoAct2 Think and Llama 3.1 405B support reasoning and tool use?+
MolmoAct2 Think: reasoning. Llama 3.1 405B: none of these features are definitively sourced. Feature support does not establish relative quality.
Which is available from more inference providers, MolmoAct2 Think or Llama 3.1 405B?+
MolmoAct2 Think has 0 sourced provider routes; Llama 3.1 405B has 1, so Llama 3.1 405B has broader tracked availability.
Which offers better value, MolmoAct2 Think or Llama 3.1 405B?+
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.