AllocateCogito v2.1 671B vs Claude Opus 4.8
Cogito v2.1 671B is not currently in the Allocate serving catalog, so this page lists no prices for it: every price on this site comes from the live catalog.
C Cogito v2.1 671B
Claude Opus 4.8
Claude Opus 4.8LabDeep CogitoAnthropic
AccessNot served on AllocateAPI only
Context windown/a200K tokens
List price, inputNot served$5 / M tokens
List price, outputNot served$25 / M tokens
Cached inputn/an/a
LicenseNot listedProprietary API
Fine-tunableYesNo
Specifications and provider list prices from the Allocate catalog, checked 2026-09-12.
Choose Cogito v2.1 671B for
- Long reasoning chains
- Open-weight agents
- Self-hosted reasoning
Choose Claude Opus 4.8 for
- Hardest reasoning problems
- High-stakes analysis
- Escalation tier for agents
Common questions
Which has the bigger context window?
Claude Opus 4.8: 200,000 tokens (200K) against an unlisted window for Cogito v2.1 671B.
Can I fine-tune Cogito v2.1 671B or Claude Opus 4.8?
Cogito v2.1 671B publishes open weights (Not listed) and can be fine-tuned on your own data. Claude Opus 4.8 is a closed model served over API; its weights are not available.
Related comparisons
Cogito v2.1 671B vs Claude Sonnet 5Claude Opus 4.8 vs Claude Sonnet 5Cogito v2.1 671B vs Gemini 3.1 ProClaude Opus 4.8 vs Gemini 3.1 ProCogito v2.1 671B vs Gemini 3.5 FlashClaude Opus 4.8 vs Gemini 3.5 Flash
Run the numbers on your workload
Or do not choose. On Allocate a route name is the contract: point yours at one model today, swap to the other tomorrow, and compare them on your live traffic with per-token metering.