Claude Sonnet 4 vs Llama 3.1 8B

Claude Sonnet 4 vs Llama 3.1 8B: Llama 3.1 8B is cheaper for input-heavy usage ($0.18/M vs $3.00/M input tokens), while Claude Sonnet 4 is better for long-context tasks (200,000 tokens).

Direct answer: choose Llama 3.1 8B for lower token spend and choose Claude Sonnet 4 when your workload needs longer context.

Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.

Anthropic

Claude Sonnet 4

Meta (via Together AI)

Llama 3.1 8B

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Claude Sonnet 4 pricing page Llama 3.1 8B pricing page Anthropic provider overview Meta (via Together AI) provider overview

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Claude Sonnet 4

Per Request:$0.0105

Daily:$1.05

Monthly:$31.50

Yearly:$383.25

Llama 3.1 8B

Per Request:$0.000270

Daily:$0.027

Monthly:$0.81

Yearly:$9.855

Cost Differences

$0.01023

Per Request

$1.023

Daily

$30.69

Monthly

$373.395

Yearly

Llama 3.1 8B costs less than Claude Sonnet 4

Quick Recommendation

Winner for direct API pricing: Llama 3.1 8B. At the default workload, Llama 3.1 8B saves about $30.69/month ($373.395/year) versus Claude Sonnet 4.

Claude Sonnet 4 full pricing breakdown Llama 3.1 8B full pricing breakdown Anthropic API pricing details Meta (via Together AI) API pricing details Anthropic vs Meta (via Together AI) API pricing Codex Mini vs Claude Opus 4.7 Codex Mini vs Claude Opus 4.6

Feature Comparison

Feature	Claude Sonnet 4	Llama 3.1 8B
Provider	Anthropic	Meta (via Together AI)
Input Price	$3.00/1M tokens	$0.18/1M tokens
Output Price	$15.00/1M tokens	$0.18/1M tokens
Context Window	200,000 tokens	128,000 tokens
Max Output	64,000 tokens	32,768 tokens
Category	standard	efficient
Capabilities	textvisioncodereasoning	textcode
Release Date	5/14/2025	7/23/2024

Claude Sonnet 4 vs Llama 3.1 8B: Which Should You Choose?

Choosing between Claude Sonnet 4 and Llama 3.1 8B depends on your priorities: cost efficiency, context length, or raw capability. Llama 3.1 8B is the more affordable option at $0.18/1M input tokens — 94% cheaper than Claude Sonnet 4. Meanwhile, Claude Sonnet 4 offers a significantly larger context window at 200,000 tokens vs 128,000 for Llama 3.1 8B.

These models come from different providers — Anthropic and Meta (via Together AI) — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to Meta (via Together AI)involves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.

These models target different tiers: Claude Sonnet 4 is a standard model while Llama 3.1 8B is efficient. This means they're optimized for different workloads. Llama 3.1 8B targets more demanding workloads, while Claude Sonnet 4 provides a cost-effective option for everyday tasks.

Output costs matter too. Claude Sonnet 4 charges $15.00/1M output tokens vs $0.18 for Llama 3.1 8B. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Llama 3.1 8B has the edge here at $0.18/1M output tokens.

Multimodal capabilities: Claude Sonnet 4 supports vision (image inputs) while Llama 3.1 8B is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose Claude Sonnet 4 when:

• You need a larger context window (200,000 tokens)
• You need more capabilities (vision, reasoning)
• You need longer outputs (up to 64,000 tokens)
• You're already using Anthropic's API ecosystem

Choose Llama 3.1 8B when:

• Budget is a primary concern
• You're already using Meta (via Together AI)'s API ecosystem
• You're running high-volume, latency-sensitive workloads

Pros and Caveats at a Glance

Claude Sonnet 4

• Input pricing: $3.00/M tokens
• Output pricing: $15.00/M tokens
• Context window: 200,000 tokens
• Max output: 64,000 tokens

Watch out for

• Higher input cost than Llama 3.1 8B
• Higher output cost than Llama 3.1 8B

Llama 3.1 8B

• Input pricing: $0.18/M tokens
• Output pricing: $0.18/M tokens
• Context window: 128,000 tokens
• Max output: 32,768 tokens

Watch out for

• Smaller context window than Claude Sonnet 4

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Claude Sonnet 4 (Anthropic)

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

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Llama 3.1 8B (Meta (via Together AI))

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

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Frequently Asked Questions

Which is cheaper, Claude Sonnet 4 or Llama 3.1 8B?▼

Llama 3.1 8B is cheaper for input tokens at $0.18 per million tokens vs $3.00 for Claude Sonnet 4 — that's 94% savings on input costs.

What is the context window difference between Claude Sonnet 4 and Llama 3.1 8B?▼

Claude Sonnet 4 supports 200,000 tokens while Llama 3.1 8B supports 128,000 tokens — a difference of 72,000 tokens in favor of Claude Sonnet 4.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, Llama 3.1 8B is the lower-cost option, while Claude Sonnet 4 offers a larger context window (200,000 vs 128,000 tokens). Choose Llama 3.1 8B for budget sensitivity or Claude Sonnet 4 for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, Claude Sonnet 4 costs about $31.50/month and Llama 3.1 8B costs about $0.81/month. Overall, Llama 3.1 8B has lower combined input + output rates ($0.18 in, $0.18 out) vs Claude Sonnet 4.

Where can I compare Anthropic and Meta (via Together AI) API pricing beyond this model matchup?▼

See the Anthropic vs Meta (via Together AI) provider comparison page for lineup-level averages, then review each model page for exact per-token rates.