Claude Opus 5 vs Phi 4
Claude Opus 5 leads the LLM Stats Score 54.9 to 5.4. Phi 4 is 114.3x cheaper per token.
Anthropic · Microsoft · Updated for 2026
Which is better?
Claude Opus 5 leads the overall LLM Stats Score 54.9 to 5.4, ranking #5 overall.
On price, Phi 4 is roughly 114.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Opus 5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Opus 5
- overall performance matters — it scores 54.9 and ranks #5 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Jul 2026
Choose Phi 4
- cost matters — it's about 114.3x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
13 reported for Claude Opus 5 · 13 for Phi 4
Claude Opus 5 and Phi 4don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Opus 5 ($5.00/1M tokens) is 71.4x more expensive than Phi 4 ($0.07/1M tokens).
For output processing, Claude Opus 5 ($25.00/1M tokens) is 178.6x more expensive than Phi 4 ($0.14/1M tokens).
In conclusion, Claude Opus 5 is more expensive than Phi 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Opus 5 accepts 1,000,000 input tokens compared to Phi 4's 16,384 tokens. Claude Opus 5 can generate longer responses up to 128,000 tokens, while Phi 4 is limited to 16,384 tokens.
Input capabilities
Documented input modalities across available providers
Claude Opus 5 supports multimodal inputs, whereas Phi 4 does not.
Claude Opus 5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Opus 5
Phi 4
License
Usage and distribution terms
Claude Opus 5 is licensed under a proprietary license, while Phi 4 uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
Claude Opus 5 was released on 2026-07-24, while Phi 4 was released on 2024-12-12.
Claude Opus 5 is 20 months newer than Phi 4.
Jul 24, 2026
1 months ago
1.6yr newerDec 12, 2024
1.7 years ago
Knowledge Cutoff
When training data ends
Phi 4 has a documented knowledge cutoff of 2024-06-01, while Claude Opus 5's cutoff date is not specified.
We can confirm Phi 4's training data extends to 2024-06-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.
—
Jun 2024
Provider Availability
Claude Opus 5 is available from Anthropic, DeepInfra. Phi 4 is available from DeepInfra.
Claude Opus 5
Phi 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Opus 5 and Phi 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Opus 5 vs Phi 4.