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GPT 5.6 Luna vs Claude 3 Haiku

At a glance

OpenAI's fastest, most affordable GPT-5.6 tier for high-volume, latency-sensitive work.

1.1M ctx$1.00/$6.00 per M

Anthropic's original fast and compact model.

52200K ctx$0.25/$1.25 per M#75/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Capability
Capability—
Reasoning & Knowledge
Graduate Science154%92.3%
Math
Math Problems—Competition Math—
Agentic
Terminal Tasks84.7%
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper78%
Capability
CapabilityECI52.4
Reasoning & Knowledge
Graduate Science36.3%
Math
Math Problems14.9%Competition Math1.8%
Agentic
Terminal Tasks—
Specs
1.1M
Context
128K
Max output
Jul 2026
Released
200K
Context
4K
Max output
Mar 2024
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.00/M tokens
Output$6.00/M tokens
Cache read$0.10/M tokens
Cache write$1.25/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input75%$0.25/M tokens
Output79%$1.25/M tokens
Cache read70%$0.03/M tokens
Cache write76%$0.30/M tokens
Web search$0.01/search
Chat with GPT 5.6 LunaGo to model
Chat with Claude 3 HaikuGo to model
Frequently Asked Questions: GPT 5.6 Luna vs Claude 3 Haiku▼

Which is better, GPT 5.6 Luna or Claude 3 Haiku?

▼

Both GPT 5.6 Luna and Claude 3 Haiku are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GPT 5.6 Luna or Claude 3 Haiku?

▼

Claude 3 Haiku has a lower blended cost. GPT 5.6 Luna: $1.00 input / $6.00 output. Claude 3 Haiku: $0.25 input / $1.25 output.

Which has a larger context window, GPT 5.6 Luna or Claude 3 Haiku?

▼

GPT 5.6 Luna has a larger context window: GPT 5.6 Luna supports 1.1M tokens vs Claude 3 Haiku at 200K tokens.

Do both GPT 5.6 Luna and Claude 3 Haiku support vision?

▼

Yes, both GPT 5.6 Luna and Claude 3 Haiku support vision/image input.

What are the key differences between GPT 5.6 Luna and Claude 3 Haiku?

▼

Key differences: Claude 3 Haiku is significantly cheaper; only GPT 5.6 Luna offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 5.6 Luna and Claude 3 Haiku for free on idapt.app to see which performs better for your specific needs.

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