Claude Haiku 4.5 vs GPT-5.6 Luna

Price, context window & benchmark comparison

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Claude Haiku 4.5

Anthropic
$1.00 / $5.00
Input / Output · per 1M tokens
VS
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GPT-5.6 Luna

OpenAI
$0.20 / $1.20
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT-5.6 Luna is 4.4× cheaper than Claude Haiku 4.5 on a typical 3:1 input/output mix. GPT-5.6 Luna scores higher on the Artificial Analysis Intelligence Index (37.3 vs 16.9). GPT-5.6 Luna has the larger context window (1.1M vs 200K).
Claude Haiku 4.5GPT-5.6 Luna
Input price / 1M$1.00$0.20
Output price / 1M$5.00$1.20
Blended price (3:1)$2.00$0.45
Cached input / 1M$0.10$0.02
Context window200K1.1M
Max output64K128K
Intelligence index16.937.3
Coding index43.971.4
Providers7
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2025-10-152026-07-09
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FAQ

Which is cheaper, Claude Haiku 4.5 or GPT-5.6 Luna?

GPT-5.6 Luna is 4.4× cheaper than Claude Haiku 4.5 on a typical 3:1 input/output mix.

Claude Haiku 4.5 vs GPT-5.6 Luna: which has a bigger context window?

Claude Haiku 4.5: 200,000 tokens. GPT-5.6 Luna: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Haiku 4.5 ≈ $4,500, GPT-5.6 Luna ≈ $1,000.

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