Claude Fable 5 vs Codex Mini

Pricing verdict: Claude Fable 5 vs Codex Mini: Codex Mini is cheaper for input-heavy usage ($1.50/M vs $10.00/M input tokens), while Claude Fable 5 is better for long-context tasks (1,000,000 tokens).

Direct answer: choose Codex Mini for lower token spend and choose Claude Fable 5 when your workload needs longer context.

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

Anthropic

Claude Fable 5

OpenAI

Codex Mini

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Claude Fable 5 pricing page Codex Mini pricing page Anthropic provider overview OpenAI provider overview

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

Claude Fable 5

Per Request:$0.035

Daily:$3.50

Monthly:$105.00

Yearly:$1,277.50

Codex Mini

Per Request:$0.004500

Daily:$0.45

Monthly:$13.50

Yearly:$164.25

Cost Differences

$0.0305

Per Request

$3.05

Daily

$91.50

Monthly

$1,113.25

Yearly

Codex Mini costs less than Claude Fable 5

Quick Recommendation

Winner for direct API pricing: Codex Mini. At the default workload, Codex Mini saves about $91.50/month ($1,113.25/year) versus Claude Fable 5.

Claude Fable 5 full pricing breakdown Codex Mini full pricing breakdown Anthropic API pricing details OpenAI API pricing details Anthropic vs OpenAI API pricing Codex Mini vs o4-mini Deep Research Codex Mini vs o3 Deep Research

Feature Comparison

Feature	Claude Fable 5	Codex Mini
Provider	Anthropic	OpenAI
Input Price	$10.00/1M tokens	$1.50/1M tokens
Output Price	$50.00/1M tokens	$6.00/1M tokens
Context Window	1,000,000 tokens	200,000 tokens
Max Output	128,000 tokens	32,768 tokens
Category	flagship	efficient
Capabilities	textvisionreasoningcode	textcodereasoning
Release Date	6/9/2026	2/2/2026

Claude Fable 5 vs Codex Mini: Which Should You Choose?

Choosing between Claude Fable 5 and Codex Mini depends on your priorities: cost efficiency, context length, or raw capability. Codex Mini is the more affordable option at $1.50/1M input tokens — 85% cheaper than Claude Fable 5. Meanwhile, Claude Fable 5 offers a significantly larger context window at 1,000,000 tokens vs 200,000 for Codex Mini.

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

These models target different tiers: Claude Fable 5 is a flagship model while Codex Mini is efficient. This means they're optimized for different workloads. Claude Fable 5 is built for complex tasks that require deeper reasoning, while Codex Mini offers better value for routine operations.

Output costs matter too. Claude Fable 5 charges $50.00/1M output tokens vs $6.00 for Codex Mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Codex Mini has the edge here at $6.00/1M output tokens.

Multimodal capabilities: Claude Fable 5 supports vision (image inputs) while Codex Mini is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose Claude Fable 5 when:

• You need a larger context window (1,000,000 tokens)
• You need more capabilities (vision)
• You need longer outputs (up to 128,000 tokens)
• You're already using Anthropic's API ecosystem

Choose Codex Mini when:

• Budget is a primary concern
• You're already using OpenAI's API ecosystem
• You're running high-volume, latency-sensitive workloads

Pros and Caveats at a Glance

Claude Fable 5

• Input pricing: $10.00/M tokens
• Output pricing: $50.00/M tokens
• Context window: 1,000,000 tokens
• Max output: 128,000 tokens

Watch out for

• Higher input cost than Codex Mini
• Higher output cost than Codex Mini

Codex Mini

• Input pricing: $1.50/M tokens
• Output pricing: $6.00/M tokens
• Context window: 200,000 tokens
• Max output: 32,768 tokens

Watch out for

• Smaller context window than Claude Fable 5

Try Different Scenarios

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

Claude Fable 5 (Anthropic)

Cost Calculator

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Model

Input Tokens

Output Tokens

Requests/Day

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Codex Mini (OpenAI)

Cost Calculator

Provider

Model

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Requests/Day

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Start using Claude Fable 5 today

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Frequently Asked Questions

Which is cheaper, Claude Fable 5 or Codex Mini?▼

Codex Mini is cheaper for input tokens at $1.50 per million tokens vs $10.00 for Claude Fable 5 — that's 85% savings on input costs.

What is the context window difference between Claude Fable 5 and Codex Mini?▼

Claude Fable 5 supports 1,000,000 tokens while Codex Mini supports 200,000 tokens — a difference of 800,000 tokens in favor of Claude Fable 5.

Which model is better for AI Agent / Agentic Workflows?▼

Both models support text, code, reasoning. For ai agent / agentic workflows, Codex Mini is the lower-cost option, while Claude Fable 5 offers a larger context window (1,000,000 vs 200,000 tokens). Choose Codex Mini for budget sensitivity or Claude Fable 5 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 Fable 5 costs about $105.00/month and Codex Mini costs about $13.50/month. Overall, Codex Mini has lower combined input + output rates ($1.50 in, $6.00 out) vs Claude Fable 5.

Where can I compare Anthropic and OpenAI API pricing beyond this model matchup?▼

See the Anthropic vs OpenAI provider comparison page for lineup-level averages, then review each model page for exact per-token rates.