OLMo
Fully open language models with open data and training code.
Full OLMo record →Head to head
OLMo vs Claude
OLMo (Allen Institute for AI) and Claude (Anthropic) both sit in Writing. OLMo is the cheaper entry point at Open weights, free. Claude shipped more tracked changes in the last 30 days (12 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | OLMo Allen Institute for AI | Claude Anthropic |
|---|---|---|
| Segment | Writing | Writing |
| Version | OLMo 3 | 5.5 |
| Entry cost | Open weights, free | Free tier · from $17/mo |
| Pricing tiers | — | Free free · Pro (Annual Subscription Discount) $17 · Pro (Billed Monthly) $20 · Max $100 · Ultra $200 · Team Standard seat (Billed Monthly) $25 · Team Standard seat (Billed Annually) $20 · Team Premium seat (Billed Monthly) $125 |
| Model stack | OLMo 3 | Claude Fable 5 · Claude Fable 5.1 · Claude Haiku 4.5 · Claude Haiku 5.5 · Claude Mythos 5 · Claude Mythos 5.1 · Claude Opus 4.5 · Claude Opus 4.8 · Claude Opus 5 · Claude Opus 5.5 · Claude Sonnet 5 · Claude Sonnet 5.5 · Opus 4.6 · Opus 4.7 · Sonnet 4.5 · Sonnet 4.6 |
| Context window | — | 1M |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 12 |
| Origin | Global | Global |
| Capabilities | Open data, Open checkpoints, Full recipe | Extended thinking, Agentic research, Computer use, Projects & memory, Artifacts, MCP connectors, Vision, Code execution |
Claude
Known for long context, careful reasoning, and artifact-style document editing.
Full Claude record →