Llama 4 405B vs Claude Haiku 4.5 for coding: which is better in 2026?

A head-to-head look at Llama 4 405B and Claude Haiku 4.5 for coding. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.

Quick verdict

For coding in May 2026, Llama 4 405B edges out Claude Haiku 4.5 on the codingIndex metric. Best fully open-weights model.

Side-by-side specs

Spec	Llama	Haiku
Intelligence index	71.5	65.8
Coding index	69.0	66.2
Context window	256K tokens	500K tokens
Speed (tok/s)	95	205
Input $/M	$0.90	$0.80
Output $/M	$2.70	$4.00
Released	Nov 5, 2025	Mar 19, 2026

How they handle coding

Llama 4 405B: Best fully open-weights model. The main caveat is trails closed flagships on coding.

Claude Haiku 4.5: Cheap Claude quality for everyday tasks. The main caveat is not as strong as opus on agentic coding.

Cost per 1,000 queries

Assuming 1,500 input and 800 output tokens per query:

Llama 4 405B: $3.51 per 1,000 queries
Claude Haiku 4.5: $4.40 per 1,000 queries

Verdict by sub-task

Best raw quality on coding:
Best price: Claude Haiku 4.5
Longest context: Claude Haiku 4.5
Fastest: Claude Haiku 4.5

FAQ

Is Llama 4 405B better than Claude Haiku 4.5 for coding?

On May 2026 benchmarks (artificialanalysis.ai), Llama 4 405B ranks higher than Claude Haiku 4.5 for coding on the codingIndex metric. The gap is small enough that the choice often comes down to price, context length, and tone.

Which is cheaper, Llama 4 405B or Claude Haiku 4.5?

Llama 4 405B costs $0.90 input and $2.70 output per million tokens. Claude Haiku 4.5 costs $0.80 input and $4.00 output per million tokens.

Can I use both Llama and Haiku in one app?

Yes. Admix is a multi model AI chat aggregator that lets you run Llama 4 405B and Claude Haiku 4.5 side by side under one subscription.

Sources

Benchmarks from artificialanalysis.ai (May 2026).

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