LLM Reference

Claude Opus 4.6 vs Llama 3.1 70B Instruct

Claude Opus 4.6 (2026) and Llama 3.1 70B Instruct (2024) are frontier reasoning models from Anthropic and AI at Meta. Claude Opus 4.6 ships a 1m-token context window, while Llama 3.1 70B Instruct ships a 128k-token context window. On HumanEval, Claude Opus 4.6 leads by 10.9 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Llama 3.1 70B Instruct is ~1150% cheaper at $0.40/1M; pay for Claude Opus 4.6 only for coding workflow support.

Decision scorecard

Local evidence first
SignalClaude Opus 4.6Llama 3.1 70B Instruct
Best forreasoning-heavy apps, multimodal apps, and tool-calling agentsprovider-routed production
Decision fitCoding, RAG, and AgentsCoding, RAG, and Long context
Context window1m128k
Cheapest output$25/1M tokens$0.40/1M tokens
Provider routes6 tracked13 tracked
Shared benchmarksHumanEval leader2 shared

Decision tradeoffs

Choose Claude Opus 4.6 when...
  • Claude Opus 4.6 holds a shared-benchmark lead on HumanEval, ahead by 10.9 points.
  • Claude Opus 4.6 has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • Claude Opus 4.6 uniquely exposes Vision, Multimodal, and Reasoning in local model data.
  • Local decision data tags Claude Opus 4.6 for Coding, RAG, and Agents.
Choose Llama 3.1 70B Instruct when...
  • Llama 3.1 70B Instruct has the lower cheapest tracked output price at $0.40/1M tokens.
  • Llama 3.1 70B Instruct has broader tracked provider coverage for fallback and route flexibility.
  • Local decision data tags Llama 3.1 70B Instruct for Coding, RAG, and Long context.

Monthly cost at traffic

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

Lower estimate Llama 3.1 70B Instruct

Claude Opus 4.6

$10,250

Cheapest tracked route/tier: Anthropic

Llama 3.1 70B Instruct

$420

Cheapest tracked route/tier: Hyperbolic AI Inference

Estimated monthly gap: $9,830. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude Opus 4.6 -> Llama 3.1 70B Instruct
  • Provider overlap exists on Microsoft Foundry, OpenRouter, and AWS Bedrock; start route-level A/B tests there.
  • Llama 3.1 70B Instruct is $24.60/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Llama 3.1 70B Instruct -> Claude Opus 4.6
  • Provider overlap exists on AWS Bedrock, Microsoft Foundry, and OpenRouter; start route-level A/B tests there.
  • Claude Opus 4.6 is $24.60/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • Claude Opus 4.6 adds Vision, Multimodal, and Reasoning in local capability data.

Specs

Specification
Released2026-02-052024-07-23
Context window1m128k
Parameters—70B
ArchitectureDecoder OnlyDecoder Only
LicenseProprietaryLlama 3 Community
OpennessProprietaryOpen weights
WeightsNot releasedAvailable
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff2025-122023-12

Pricing and availability

Pricing attributeClaude Opus 4.6Llama 3.1 70B Instruct
Input price$5/1M tokens$0.40/1M tokens
Output price$25/1M tokens$0.40/1M tokens
Providers
AnthropicAWS BedrockGCP Vertex AIMicrosoft FoundryOpenRouterVercel AI Gateway
Cloudflare Workers AIOctoAI API (Deprecated)Together AIFireworks AINVIDIA NIMMicrosoft Foundry

Capabilities

CapabilityClaude Opus 4.6Llama 3.1 70B Instruct
VisionYesNo
MultimodalYesNo
ReasoningYesNo
JSON / Tool useYesNo
Structured outputsYesYes
Code executionYesNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkClaude Opus 4.6Llama 3.1 70B Instruct
HumanEval95.084.1
Massive Multitask Language Understanding91.186.0

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Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.