GPT-5.6 Sol
GPT-5.6 Sol by OpenAI: League Score, pricing, context window and sourced benchmarks — the full tracked record.
82 Closed $4.00 / $20.00 per 1M 1.1M context
League positions: #8 overall · #3 Reasoning Division · #23 Value Division. Score coverage: 70% of components measured. Count tokens & cost for GPT-5.6 Sol · Estimate a workload cost
Agent-ready: this model is tracked with agentic strengths. See the AI Agents section for the products and frameworks that put models like this to work.
Specifications & pricing
| Maker | OpenAI — lab profile |
| Family | GPT-5.6 |
| Released | Jul 9, 2026 |
| Status | Current |
| Weights | Closed / proprietary API |
| License | Proprietary |
| Knowledge cutoff | 2026-02-16 |
| Context window | 1,050,000 tokens |
| Max output | 128,000 tokens |
| Modalities in | text, image |
| Modalities out | text |
| API price (input) | $4.00 per 1M tokens |
| API price (output) | $20.00 per 1M tokens |
| Cached input | $0.40 per 1M |
| Blended (3:1 in:out) | $8.00 per 1M |
| Pricing source | Official pricing page (checked Oct 14, 2026) |
| API access | OpenAI API |
Benchmark results
| Benchmark | Score | Source | Date | Link |
|---|---|---|---|---|
| GPQA Diamond | 94.6 / 100 | BenchLM GPQA leaderboard | Oct 14, 2026 | Source |
| LMArena Elo | 1514 | LMArena via Swfte snapshot | Oct 7, 2026 | Source |
| LiveBench overall | 76.3 / 100 | LiveBench | Oct 14, 2026 | Source |
How its League Score is built
| Component | Raw | Normalised | Weight | Date | Link |
|---|---|---|---|---|---|
| LiveBench overall | 76.3 | 72.1 | 40% | Oct 14, 2026 | Source |
| GPQA Diamond | 94.6 | 93.9 | 15% | Oct 14, 2026 | Source |
| LMArena Elo | 1514 | 97.5 | 15% | Oct 7, 2026 | Source |
Normalised 0–100 against the tracked field; missing components redistribute their weight. Full rules on the methodology page.
Closest rivals
- GPT-5.6 Sol vs Claude Sonnet 5.5 — full comparison or compare any pair
- GPT-5.6 Sol vs Muse Wonder — full comparison or compare any pair
- GPT-5.6 Sol vs DeepSeek V4.1 Flash — full comparison or compare any pair
FAQ
How much does GPT-5.6 Sol cost?
GPT-5.6 Sol costs $4.00 per 1M input tokens and $20.00 per 1M output tokens on the first-party API (checked Oct 14, 2026).
What is the context window of GPT-5.6 Sol?
GPT-5.6 Sol accepts up to 1,050,000 tokens of context.
Is GPT-5.6 Sol open source?
No — GPT-5.6 Sol is a closed model available through OpenAI’s API and products.
Data verified Oct 14, 2026. Spotted an error? Every figure above links to its source.