AI Rankings
Claude Opus 4.6 vs GPT-5.6 Sol: Scores, Price and Which to Choose
Data updated
Read the model pages for the full picture: Claude Opus 4.6 and GPT-5.6 Sol.
Side by side
- Claude Opus 4.6
- GPT-5.6 Sol
- Epoch Capabilities IndexGPT-5.6 Sol leads
Combined score over many tests. Bar shows where it sits between the lowest and highest score we track.
Claude Opus 4.6:155.7GPT-5.6 Sol:Better: 162.8 - Arena text ratingClaude Opus 4.6 leads
Rating from head-to-head votes by people. Bar shows where it sits between the lowest and highest score we track.
Claude Opus 4.6:Better: 1503GPT-5.6 Sol:1485 - Arena coding ratingClaude Opus 4.6 leads
Rating from head-to-head votes by people. Bar shows where it sits between the lowest and highest score we track.
Claude Opus 4.6:Better: 1547GPT-5.6 Sol:1534 - Arena web development ratingGPT-5.6 Sol leads
Rating from head-to-head votes by people. Bar shows where it sits between the lowest and highest score we track.
Claude Opus 4.6:1546GPT-5.6 Sol:Better: 1615 - Arena vision ratingToo close to call
Rating from head-to-head votes by people. Bar shows where it sits between the lowest and highest score we track.
Claude Opus 4.6:1299GPT-5.6 Sol:1286 - ARC-AGI-2GPT-5.6 Sol leads
Visual puzzles where the AI must work out a new rule from a few examples and apply it.
Claude Opus 4.6:69.2%GPT-5.6 Sol:Better: 92.5% - SimpleBenchGPT-5.6 Sol leads
Everyday common-sense and trick questions that most people answer correctly but AI models often get wrong.
Claude Opus 4.6:67.6%GPT-5.6 Sol:Better: 71.7% - FrontierMath (Tiers 1-3)GPT-5.6 Sol leads
Original, very hard maths problems written by mathematicians.
Claude Opus 4.6:66.0%GPT-5.6 Sol:Better: 89.1% - GPQA DiamondGPT-5.6 Sol leads
Very hard multiple-choice science questions in biology, physics and chemistry, written by experts and designed so a quick web search does not give the answer.
Claude Opus 4.6:90.5%GPT-5.6 Sol:Better: 93.5% - OTIS Mock AIMEGPT-5.6 Sol leads
Maths competition problems in the style of the US AIME exam, from the 2024 and 2025 sets.
Claude Opus 4.6:94.4%GPT-5.6 Sol:Better: 100.0% - SimpleQA VerifiedGPT-5.6 Sol leads
Short factual questions that each have one correct answer.
Claude Opus 4.6:47.0%GPT-5.6 Sol:Better: 69.7% - Blended price per million tokensGPT-5.6 Sol costs less
Blended price: lower is better.
Claude Opus 4.6:$10.00GPT-5.6 Sol:Better: $8.00 - Context windowToo close to call
How much text it can read at once.
Claude Opus 4.6:1M tokensGPT-5.6 Sol:922K tokens
The numbers
| Measure | Claude Opus 4.6 | GPT-5.6 Sol |
|---|---|---|
| Epoch Capabilities Index | 155.7 | 162.8 |
| Arena text rating | 1503 | 1485 |
| Arena coding rating | 1547 | 1534 |
| Arena web development rating | 1546 | 1615 |
| Arena vision ratingToo close to call | 1299 | 1286 |
| ARC-AGI-2 | 69.2% | 92.5% |
| SimpleBench | 67.6% | 71.7% |
| FrontierMath (Tiers 1-3) | 66.0% | 89.1% |
| GPQA Diamond | 90.5% | 93.5% |
| OTIS Mock AIME | 94.4% | 100.0% |
| SimpleQA Verified | 47.0% | 69.7% |
| Blended price per million tokens | $10.00 | $8.00 |
| Context windowToo close to call | 1M tokens | 922K tokens |
What it costs in everyday terms
- 100 chats with Claude Opus 4.6
- $1.75
- Blended price $10.00 per million tokens.
- 100 chats with GPT-5.6 Sol
- $1.40
- Blended price $8.00 per million tokens.
Who should pick which
Pick Claude Opus 4.6 if these matter most
- Arena text rating: 1503 against 1485
- Arena coding rating: 1547 against 1534
Pick GPT-5.6 Sol if these matter most
- Epoch Capabilities Index: 162.8 against 155.7
- Arena web development rating: 1615 against 1546
- ARC-AGI-2: 92.5% against 69.2%
- SimpleBench: 71.7% against 67.6%
- FrontierMath (Tiers 1-3): 89.1% against 66.0%
- GPQA Diamond: 93.5% against 90.5%
- OTIS Mock AIME: 100.0% against 94.4%
- SimpleQA Verified: 69.7% against 47.0%
- Blended price per million tokens: $8.00 against $10.00
Too close to call: Arena vision rating, Context window.
Scores come from tests and votes, not from your own work. Try both on a task you care about before you commit.
Questions about this comparison
- Which is better, Claude Opus 4.6 or GPT-5.6 Sol?
- GPT-5.6 Sol scores higher on 8 of 11 shared quality measures, Claude Opus 4.6 on 2. 1 measure is too close to call. GPT-5.6 Sol costs about 20% less than Claude Opus 4.6 on a blended price of $8.00 against $10.00 per million tokens. Which one is better for you depends on your task and budget, so test both on your own work.
- Which is cheaper, Claude Opus 4.6 or GPT-5.6 Sol?
- GPT-5.6 Sol is cheaper on blended price: $10.00 per million tokens for Claude Opus 4.6 against $8.00 for GPT-5.6 Sol. For 100 chats of about 1,000 tokens in and 500 tokens back, that is about $1.75 for Claude Opus 4.6 and $1.40 for GPT-5.6 Sol.
- Which is better for coding, Claude Opus 4.6 or GPT-5.6 Sol?
- On Arena coding rating, Claude Opus 4.6 scores higher (1547 against 1534). One measure is not the whole picture, so check the full table above.
Where this data comes from
- Epoch AI: Benchmark data: Epoch AI, 'Capabilities & benchmarking', epoch.ai/benchmarks (CC BY 4.0). We match models across sources, rank them and show them in charts. Scores are not changed. Epoch AI does not endorse this site.
- Arena (formerly LMArena): Human-preference ratings: Arena (arena.ai) leaderboard dataset, CC BY 4.0. We keep the latest published ratings, match them to models from other sources and rank them. Ratings are not changed. Arena does not endorse this site.
- LiteLLM model price list: Prices and context windows: LiteLLM model price list (github.com/BerriAI/litellm, MIT licence). We use the model maker's own price entry when there is one. Prices change often, so always confirm on the maker's site before you buy.
Newest data on this page: 26 Oct 2026. Prices are list prices and change often, so confirm on the maker's site before you buy. Sponsors never change a score or an order. How we calculate this · Report a mistake