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Claude Haiku 4.5 vs GPT 5.1 Codex Mini

At a glance

Fast and efficient with near-frontier intelligence.

75200K ctx$1.00/$5.00 per M#41/92

Compact coding model for fast, cost-efficient development tasks.

400K ctx$0.25/$2.00 per M
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
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.3
Reasoning & Knowledge
Graduate Science60.5%
Math
Math Problems86.9%Competition Math35.8%Research Math4.1%
Agentic
Terminal Tasks29.8%Novel Reasoning1.3%
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Cheaper66%
Capability
Capability—
Reasoning & Knowledge
Graduate Science—
Math
Math Problems—Competition Math—Research Math—
Agentic
Terminal Tasks107%61.6%Novel Reasoning—
Specs
200K
Context
64K
Max output
Oct 2025
Released
400K
Context
100K
Max output
Nov 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.00/M tokens
Output$5.00/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
Output60%$2.00/M tokens
Cache read75%$0.02/M tokens
Web search$0.01/search
Chat with Claude Haiku 4.5Go to model
Chat with GPT 5.1 Codex MiniGo to model
Frequently Asked Questions: Claude Haiku 4.5 vs GPT 5.1 Codex Mini▼

Which is better, Claude Haiku 4.5 or GPT 5.1 Codex Mini?

▼

Both Claude Haiku 4.5 and GPT 5.1 Codex Mini 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, Claude Haiku 4.5 or GPT 5.1 Codex Mini?

▼

GPT 5.1 Codex Mini has a lower blended cost. Claude Haiku 4.5: $1.00 input / $5.00 output. GPT 5.1 Codex Mini: $0.25 input / $2.00 output.

Which has a larger context window, Claude Haiku 4.5 or GPT 5.1 Codex Mini?

▼

GPT 5.1 Codex Mini has a larger context window: Claude Haiku 4.5 supports 200K tokens vs GPT 5.1 Codex Mini at 400K tokens.

Do both Claude Haiku 4.5 and GPT 5.1 Codex Mini support vision?

▼

Yes, both Claude Haiku 4.5 and GPT 5.1 Codex Mini support vision/image input.

What are the key differences between Claude Haiku 4.5 and GPT 5.1 Codex Mini?

▼

Key differences: GPT 5.1 Codex Mini is significantly cheaper. 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 Claude Haiku 4.5 and GPT 5.1 Codex Mini for free on idapt.app to see which performs better for your specific needs.

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