AllocateCogito v2.1 671B vs Gemini 3.5 Flash
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
Gemini 3.5 Flash
Gemini 3.5 FlashLabDeep CogitoGoogle
AccessNot served on AllocateAPI only
Context windown/a1M tokens
List price, inputNot served$1.5 / M tokens
List price, outputNot served$9 / 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 Gemini 3.5 Flash for
- High-volume support and triage
- Document extraction at scale
- Vision and OCR pipelines
Common questions
Which has the bigger context window?
Gemini 3.5 Flash: 1,000,000 tokens (1M) against an unlisted window for Cogito v2.1 671B.
Can I fine-tune Cogito v2.1 671B or Gemini 3.5 Flash?
Cogito v2.1 671B publishes open weights (Not listed) and can be fine-tuned on your own data. Gemini 3.5 Flash is a closed model served over API; its weights are not available.
Related comparisons
Cogito v2.1 671B vs Gemini 3.1 ProGemini 3.5 Flash vs Gemini 3.1 ProCogito v2.1 671B vs DeepSeek V4 ProGemini 3.5 Flash vs DeepSeek V4 ProCogito v2.1 671B vs Inkling FP4Gemini 3.5 Flash vs Inkling FP4
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.