DeepSeek V4 Flash vs Together AI - Llama 3 8B Lite

DeepSeek V4 Flash (2026) and Together AI - Llama 3 8B Lite (2025) are frontier reasoning models from DeepSeek and AI at Meta. DeepSeek V4 Flash ships a 1M-token context window, while Together AI - Llama 3 8B Lite ships a 8K-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

DeepSeek V4 Flash fits 122x more tokens; pick it for long-context work and Together AI - Llama 3 8B Lite for tighter calls.

Decision scorecard

Local evidence first
SignalDeepSeek V4 FlashTogether AI - Llama 3 8B Lite
Best forreasoning-heavy apps, tool-calling agents, and long-context analysistool-calling agents
Decision fitCoding, RAG, and AgentsAgents, Classification, and JSON / Tool use
Context window1M8K
Cheapest output$0.12/1M tokens$0.10/1M tokens
Provider routes5 tracked1 tracked
Shared benchmarks0 shared0 shared

Decision tradeoffs

Choose DeepSeek V4 Flash when...
  • DeepSeek V4 Flash has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • DeepSeek V4 Flash has broader tracked provider coverage for fallback and route flexibility.
  • DeepSeek V4 Flash uniquely exposes Reasoning in local model data.
  • Local decision data tags DeepSeek V4 Flash for Coding, RAG, and Agents.
Choose Together AI - Llama 3 8B Lite when...
  • Together AI - Llama 3 8B Lite has the lower cheapest tracked output price at $0.10/1M tokens.
  • Local decision data tags Together AI - Llama 3 8B Lite for Agents, Classification, and JSON / Tool use.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Lower estimate DeepSeek V4 Flash

DeepSeek V4 Flash

$76.26

Cheapest tracked route/tier: OpenRouter

Together AI - Llama 3 8B Lite

$105

Cheapest tracked route/tier: Together AI

Estimated monthly gap: $28.74. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

DeepSeek V4 Flash -> Together AI - Llama 3 8B Lite
  • No overlapping tracked provider route is sourced for DeepSeek V4 Flash and Together AI - Llama 3 8B Lite; plan for SDK, billing, or endpoint changes.
  • Together AI - Llama 3 8B Lite is $0.02/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Check replacement coverage for Reasoning before moving production traffic.
Together AI - Llama 3 8B Lite -> DeepSeek V4 Flash
  • No overlapping tracked provider route is sourced for Together AI - Llama 3 8B Lite and DeepSeek V4 Flash; plan for SDK, billing, or endpoint changes.
  • DeepSeek V4 Flash is $0.02/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • DeepSeek V4 Flash adds Reasoning in local capability data.

Specs

Specification
Released2026-04-242025-07-15
Context window1M8K
Parameters284B8B
ArchitectureMixture of ExpertsDecoder Only
LicenseMITOSI-approvedLlama 3 Community
OpennessOpen sourceOpen weights
WeightsAvailableUnknown
CodeUnknownUnknown
Commercial useCommercial use: permittedCommercial use: conditional
Knowledge cutoff-2024-03

Pricing and availability

Pricing attributeDeepSeek V4 FlashTogether AI - Llama 3 8B Lite
Input price
Off-peak
$0.22/1M tokens
All UTC hours outside DeepSeek's peak windows. Cache-hit input: $0.007 per 1M tokens; cache-miss input: $0.22 per 1M; output: $0.66 per 1M.
Peak
$0.44/1M tokens
01:00-04:00 and 06:00-10:00 UTC. Cache-hit input: $0.014 per 1M tokens; cache-miss input: $0.44 per 1M; output: $1.32 per 1M.
$0.10/1M tokens
Output price
Off-peak
$0.66/1M tokens
All UTC hours outside DeepSeek's peak windows. Cache-hit input: $0.007 per 1M tokens; cache-miss input: $0.22 per 1M; output: $0.66 per 1M.
Peak
$1.32/1M tokens
01:00-04:00 and 06:00-10:00 UTC. Cache-hit input: $0.014 per 1M tokens; cache-miss input: $0.44 per 1M; output: $1.32 per 1M.
$0.10/1M tokens
Providers
DeepSeek PlatformOpenRouterMicrosoft FoundryVercel AI GatewayNovita AI
Together AI

Capabilities

CapabilityDeepSeek V4 FlashTogether AI - Llama 3 8B Lite
VisionNoNo
MultimodalNoNo
ReasoningYesNo
JSON / Tool useYesYes
Structured outputsYesYes
Code executionNoNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

No shared benchmark scores are currently available for this pair.

Deep dive

The capability footprint differs most on reasoning mode: DeepSeek V4 Flash. Both models share JSON / Tool use, and structured outputs, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.

For cost, DeepSeek V4 Flash lists tiered pricing: Off-peak is $0.22/1M input and $0.66/1M output; Peak is $0.44/1M input and $1.32/1M output, while Together AI - Llama 3 8B Lite lists $0.10/1M input and $0.10/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts DeepSeek V4 Flash lower by about $0.02 per million blended tokens. For tiered rows, this cheapest-track view can understate interactive or fast-lane spend, so compare the tier you will actually use. Availability is 5 providers versus 1, so concentration risk also matters.

Choose DeepSeek V4 Flash when reasoning depth, larger context windows, and lower cheapest-tier input-token cost are central to the workload. Choose Together AI - Llama 3 8B Lite when provider fit are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.

FAQ

Which has a larger context window, DeepSeek V4 Flash or Together AI - Llama 3 8B Lite?

DeepSeek V4 Flash supports 1M tokens, while Together AI - Llama 3 8B Lite supports 8K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.

Which is cheaper, DeepSeek V4 Flash or Together AI - Llama 3 8B Lite?

DeepSeek V4 Flash lists tiered pricing: Off-peak is $0.22/1M input and $0.66/1M output; Peak is $0.44/1M input and $1.32/1M output. Together AI - Llama 3 8B Lite lists $0.10/1M input and $0.10/1M output tokens on the cheapest tracked provider. Compare the tier you will actually use; cheap async pricing can overstate savings for interactive workflows. Provider discounts or batch pricing can still change the final bill.

Is DeepSeek V4 Flash or Together AI - Llama 3 8B Lite open source?

DeepSeek V4 Flash is listed under MIT. Together AI - Llama 3 8B Lite is listed under Llama 3 Community. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.

Which is better for reasoning mode, DeepSeek V4 Flash or Together AI - Llama 3 8B Lite?

DeepSeek V4 Flash has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.

Which is better for JSON / Tool use, DeepSeek V4 Flash or Together AI - Llama 3 8B Lite?

Both DeepSeek V4 Flash and Together AI - Llama 3 8B Lite expose JSON / Tool use. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.

Where can I run DeepSeek V4 Flash and Together AI - Llama 3 8B Lite?

DeepSeek V4 Flash is available on DeepSeek Platform, OpenRouter, Microsoft Foundry, Vercel AI Gateway, and Novita AI. Together AI - Llama 3 8B Lite is available on Together AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.

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Last reviewed: 2026-10-08. Data sourced from public model cards and provider documentation.