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GPT 5.2 Codex vs Muse Spark 1.1

At a glance
OpenAIGPT 5.2 Codex

Optimized for software engineering and coding workflows.

400K ctx$1.75/$14.00 per M
MetaMuse Spark 1.1

Meta's multimodal reasoning model built for agentic work and real-world coding.

1.0M ctx$1.25/$4.25 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
OpenAIGPT 5.2 Codex
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Reasoning & Knowledge
Expert-Level—
Agentic
Terminal Tasks66.5%
MetaMuse Spark 1.1
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-16
Cheaper
Reasoning & Knowledge
Expert-Level52.2%
Agentic
Terminal Tasks80.0%
Specs
OpenAIGPT 5.2 Codex
400K
Context
128K
Max output
Jan 2026
Released
MetaMuse Spark 1.1
1.0M
Context
16K
Max output
Jul 2026
Released
Capabilities
OpenAIGPT 5.2 Codex
Vision
Audio
Reasoning
MetaMuse Spark 1.1
Vision
Audio
Reasoning
Pricing
OpenAIGPT 5.2 Codex
Live pricing, shown before you run
Input$1.75/M tokens
Output$14.00/M tokens
Cache read$0.17/M tokens
Web search$0.01/search
MetaMuse Spark 1.1
Live pricing, shown before you run
Input$1.25/M tokens
Output$4.25/M tokens
Cache read$0.15/M tokens
Web search$0.003/search
Chat with GPT 5.2 CodexGo to model
Chat with Muse Spark 1.1Go to model
Frequently Asked Questions: GPT 5.2 Codex vs Muse Spark 1.1▼

Which is better, GPT 5.2 Codex or Muse Spark 1.1?

▼

Both GPT 5.2 Codex and Muse Spark 1.1 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 5.2 Codex or Muse Spark 1.1?

▼

Muse Spark 1.1 has a lower blended cost. GPT 5.2 Codex: $1.75 input / $14.00 output. Muse Spark 1.1: $1.25 input / $4.25 output.

Which has a larger context window, GPT 5.2 Codex or Muse Spark 1.1?

▼

Muse Spark 1.1 has a larger context window: GPT 5.2 Codex supports 400K tokens vs Muse Spark 1.1 at 1M tokens.

Do both GPT 5.2 Codex and Muse Spark 1.1 support vision?

▼

Yes, both GPT 5.2 Codex and Muse Spark 1.1 support vision/image input.

What are the key differences between GPT 5.2 Codex and Muse Spark 1.1?

▼

GPT 5.2 Codex and Muse Spark 1.1 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 5.2 Codex and Muse Spark 1.1 for free on idapt.app to see which performs better for your specific needs.

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