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GPT-6 Sol vs Claude Opus 5
Claude Opus 5 scores higher than GPT-6 Sol on all 3 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, GPT-6 Sol is at 75.5 and Claude Opus 5 at 77.5 (out of 100). On each maker's API, GPT-6 Sol costs $2 / $10 per 1M tokens (input / output) and Claude Opus 5 $5 / $25.
Scores as published by each board; table composed November 10, 2026.
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Leaderboard by leaderboard
| Board | GPT-6 Sol | Claude Opus 5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,673.9 | 1,690.8 | Claude Opus 5 |
| SimpleBench AVG@5 % (private set) | 73.1 | 80.6 | Claude Opus 5 |
| Epoch AI Epoch Capabilities Index (ECI) · many benchmarks on one scale | 164 | 164.5 | Claude Opus 5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, GPT-6 Sol is at 41.2 (#25 of 47) and Claude Opus 5 at 85 (#7). Claude Opus 5 scores higher on both coding boards that rate them.
| Coding board | GPT-6 Sol | Claude Opus 5 |
|---|---|---|
| LMArena · Coding | 1,448 | 1,531.9 |
| Vals Vibe Code Bench | 87.8 | 88.4 |
GPT-6 Sol at a glance
- Developer
- OpenAI
- Status
- Live since September 22, 2026
- API price
- $2 input / $10 output per 1M tokens · OpenAI, gpt-6-sol
- Context window
- 1.05M tokens
Live — Sep 22, in the API, ChatGPT and Codex the same day · the everyday tier under Astra · $2/$10 per 1M, cached input $0.20 — from our own read of OpenAI's GPT-6.1 Sol launch page, which calls 6.1 Sol's $2/$10 'the same sticker as GPT-6 Sol' and its $0.10 cached rate half of GPT-6 Sol's · models.dev lists gpt-6-sol on OpenAI's own API (read Sep 24).
Vals publishes CyberOffense: gated GPT-6 Sol completes 80.8% of a simulated network attack, open-weight DeepSeek V4.1 Flash 72.8%
2026-11-09 · Vals AI has published its CyberOffense benchmark in full. Seven AI models ran as autonomous agents against two simulated corporate networks, with no human help. GPT-6 Sol, which OpenAI offers for this kind of work only through its restricted Daybreak program, completed the most: 80.8% of objectives on Vals' scoring.
Claude Opus 5 at a glance
- Developer
- Anthropic
- Status
- Live since July 24, 2026
- API price
- $5 input / $25 output per 1M tokens · Anthropic, claude-opus-5
- Context window
- 1M tokens
Live — detected 16:51 UTC Jul 24, alert fired 61s later · superseded by Opus 5.5 on Sep 22 and moved to Anthropic's legacy list; still served at $5/$25, which is now MORE than its successor.
Claude Opus 5 is live — we detected it at 16:51 UTC and had alerts out 61 seconds later
2026-07-24 · Anthropic's Claude Opus 5 went live on the public API today. Our checkers saw the id appear at 16:51:33 UTC, confirmed it on the next 60-second sweep, and the alert blast went out at 16:52:34 — sixty-one seconds from first sighting to inbox.
GPT-6 Sol vs Claude Opus 5: quick answers
Which is better, GPT-6 Sol or Claude Opus 5?
It depends on what you measure. Claude Opus 5 scores higher than GPT-6 Sol on all 3 public leaderboards that rate both. Claude Opus 5's widest lead is on SimpleBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, GPT-6 Sol is at 75.5 and Claude Opus 5 at 77.5 (out of 100).
Which is newer, GPT-6 Sol or Claude Opus 5?
GPT-6 Sol. It went live on September 22, 2026, 60 days after Claude Opus 5 (July 24, 2026).
Which is cheaper, GPT-6 Sol or Claude Opus 5?
GPT-6 Sol is cheaper on both input and output. On each vendor's own API, GPT-6 Sol is $2 input / $10 output per million tokens and Claude Opus 5 is $5 input / $25 output per million tokens. GPT-6 Sol's rate rises for prompts over 272K tokens. Prices as published in the models.dev catalog, as of 2026-11-10.
Which has the bigger context window, GPT-6 Sol or Claude Opus 5?
GPT-6 Sol, at 1.05M tokens against Claude Opus 5's 1M, as each vendor lists it.
How do GPT-6 Sol and Claude Opus 5 compare for coding?
On the ArtificialWatch coding index, GPT-6 Sol is at 41.2 (#25 of 47) and Claude Opus 5 at 85 (#7). Claude Opus 5 scores higher on both coding boards that rate them.
Who makes GPT-6 Sol and Claude Opus 5?
GPT-6 Sol is from OpenAI; Claude Opus 5 is from Anthropic.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed November 10, 2026). Boards measure different things, so raw scores are only comparable within a row.
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Also: the bench index · API pricing · what a workload costs on each · the wire