Claude Opus 5 vs Solar Pro 4
Claude Opus 5 leads the LLM Stats Score 56.2 to 36.0. Solar Pro 4 is 19.0x cheaper per token.
Anthropic · Upstage · Updated for 2026
Which is better?
Claude Opus 5 leads the overall LLM Stats Score 56.2 to 36.0, ranking #2 overall.
In the 1 individual benchmarks reported for both models, Claude Opus 5 wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Solar Pro 4 is roughly 19.0x 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 56.2 and ranks #2 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you process long inputs — it offers a 1,000,000 token context window
Choose Solar Pro 4
- cost matters — it's about 19.0x cheaper per token
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Individual benchmarks
12 reported for Claude Opus 5 · 9 for Solar Pro 4
Claude Opus 5 outperforms in 1 benchmarks (BrowseComp), while Solar Pro 4 is better at 0 benchmarks.
Claude Opus 5 significantly outperforms across most benchmarks.
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 16.7x more expensive than Solar Pro 4 ($0.30/1M tokens).
For output processing, Claude Opus 5 ($25.00/1M tokens) is 20.8x more expensive than Solar Pro 4 ($1.20/1M tokens).
In conclusion, Claude Opus 5 is more expensive than Solar Pro 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 Solar Pro 4's 524,288 tokens. Solar Pro 4 can generate longer responses up to 131,072 tokens, while Claude Opus 5 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Claude Opus 5 supports multimodal inputs, whereas Solar Pro 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
Solar Pro 4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Opus 5 was released on 2026-07-24, while Solar Pro 4 was released on 2026-08-06.
Solar Pro 4 is 0 month newer than Claude Opus 5.
Jul 24, 2026
1 months ago
Aug 6, 2026
3 weeks ago
1w newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Opus 5 is available from Anthropic. Solar Pro 4 is available from Upstage.
Claude Opus 5
Solar Pro 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Opus 5 and Solar Pro 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Opus 5 vs Solar Pro 4.