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Command R+ vs GPT-5.1 Codex

Comparing Command R+ and GPT-5.1 Codex across benchmarks, pricing, and capabilities.

Cohere · OpenAI · Updated for 2026

Which is better?

Command R+ and GPT-5.1 Codex trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Command R+ is roughly 7.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.1 Codex also accepts a larger context window (400,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Command R+

  • cost matters — it's about 7.9x cheaper per token
  • you need open weights you can self-host or fine-tune

Choose GPT-5.1 Codex

  • you process long inputs — it offers a 400,000 token context window
  • you want the most recent training data — it shipped Nov 2025

At a glance

The differences that matter most.

Command R+
Cohere
GPT-5.1 Codex
OpenAI
Benchmark wins
—
—
Input price
$0.25 / M
$1.25 / M
Output price
$1.00 / M
$10.00 / M
Context window
128,000
400,000
Released
Aug 2024
Nov 2025
License
CC BY-NC
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Command R+ and GPT-5.1 Codexdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

Command R+ costs less

For input processing, Command R+ ($0.25/1M tokens) is 5.0x cheaper than GPT-5.1 Codex ($1.25/1M tokens).

For output processing, Command R+ ($1.00/1M tokens) is 10.0x cheaper than GPT-5.1 Codex ($10.00/1M tokens).

In conclusion, GPT-5.1 Codex is more expensive than Command R+.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Aug 25 2026 • llm-stats.com
Cohere
Command R+
Input tokens$0.25
Output tokens$1.00
Best providerCohere
OpenAI
GPT-5.1 Codex
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.1 Codex accepts 400,000 input tokens compared to Command R+'s 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Cohere
Command R+
Input128,000 tokens
Output128,000 tokens
OpenAI
GPT-5.1 Codex
Input400,000 tokens
Output128,000 tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.1 Codex supports multimodal inputs, whereas Command R+ does not.

GPT-5.1 Codex can handle both text and other forms of data like images, making it suitable for multimodal applications.

Command R+

Text
Images
Audio
Video

GPT-5.1 Codex

Text
Images
Audio
Video

License

Usage and distribution terms

Command R+ is licensed under CC BY-NC, while GPT-5.1 Codex uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Command R+

CC BY-NC

Open weights

GPT-5.1 Codex

Proprietary

Closed source

Release Timeline

When each model was launched

Command R+ was released on 2024-08-30, while GPT-5.1 Codex was released on 2025-11-19.

GPT-5.1 Codex is 15 months newer than Command R+.

Command R+

Aug 30, 2024

2.0 years ago

GPT-5.1 Codex

Nov 19, 2025

9 months ago

1.2yr newer

Knowledge Cutoff

When training data ends

GPT-5.1 Codex has a documented knowledge cutoff of 2024-09-30, while Command R+'s cutoff date is not specified.

We can confirm GPT-5.1 Codex's training data extends to 2024-09-30, but cannot make a direct comparison without Command R+'s cutoff date.

Command R+

—

GPT-5.1 Codex

Sep 2024

Provider Availability

Command R+ is available from Cohere, Bedrock. GPT-5.1 Codex is available from OpenAI.

Command R+

cohere logo
Cohere
Input Price:Input: $0.25/1MOutput Price:Output: $1.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

GPT-5.1 Codex

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Command R+ and GPT-5.1 Codex side-by-side, then vote on the output you prefer.

Command R+
✓ Preferred
GPT-5.1 Codex
Open in Playground

FAQ

Common questions about Command R+ vs GPT-5.1 Codex.

Which is better, Command R+ or GPT-5.1 Codex?

Command R+ (Cohere) and GPT-5.1 Codex (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Command R+ compare to GPT-5.1 Codex in benchmarks?

Command R+ scores HellaSwag: 88.6%, Winogrande: 85.4%, MMLU: 75.7%, ARC-C: 71.0%, GSM8k: 70.7%. GPT-5.1 Codex scores SWE-Bench Verified: 73.7%, SWE-Lancer: 66.3%, Terminal-Bench 2.0: 52.8%.

Is Command R+ cheaper than GPT-5.1 Codex?

Command R+ is 5.0x cheaper for input tokens. Command R+ costs $0.25/M input and $1.00/M output via cohere. GPT-5.1 Codex costs $1.25/M input and $10.00/M output via openai.

What are the context window sizes for Command R+ and GPT-5.1 Codex?

Command R+ supports 128K tokens and GPT-5.1 Codex supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Command R+ and GPT-5.1 Codex?

Key differences include context window (128K vs 400K), input pricing ($0.25 vs $1.25/M), multimodal support (no vs yes), licensing (CC BY-NC vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Command R+ and GPT-5.1 Codex?

Command R+ is developed by Cohere and GPT-5.1 Codex is developed by OpenAI.

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