GPT-5.5 Pro vs GPT-6 Sol
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (4)
Compare GPT-5.5 Pro by OpenAI against GPT-6 Sol by OpenAI across real-world coding, reasoning, token economics, and latency.
Changez et Comparez les Modèles
Select any AI models from our verified benchmark database to generate live side-by-side matrices.
Live comparison: no in-depth editorial review has been published for this pair yet.
GPT-5.5 Pro
Précision maximalele slowest but la plupart accurate GPT-5.5 palier pour raisonnement et codage.
$50.00 / 1M
$300.00 / 1M
1.05M tokens
82.6%
GPT-6 Sol
GPT-6 économiqueun GPT-6 palier offrant complexe codage et professionnel travail à half le prix de GPT-5.6 Sol.
$2.00 / 1M
$10.00 / 1M
1M tokens
82.1%
Différences Clés en un Coup d’Œil
- GPT-6 Sol is 29.0x cheaper for API usage (input + output tokens combined).
- GPT-5.5 Pro has a larger context window (1M vs 1M tokens).
- GPT-6 Sol is faster at 116 tok/s vs 42 tok/s.
- GPT-5.5 Pro leads on SWE-bench coding (82.6% vs 82.1%).
| Caractéristique | GPT-5.5 Pro | GPT-6 Sol |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 87 | 93 |
Provider | OpenAI | OpenAI |
Input Price Cost per million input tokens | $50.00 / 1M | $2.00 / 1M |
Output Price Cost per million output tokens | $300.00 / 1M | $10.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $43.50 / 1M | $1.47 / 1M |
Context Window Maximum input + output tokens | 1.05M tokens~1,575 A4 pages of text | 1M tokens~1,500 A4 pages of text |
Max Output Tokens Per single request | 128K | 128K |
Throughput Speed Tokens generated per second | 42 tok/s | 116 tok/s |
SWE-bench Verified Real-world software engineering | 82.6% | 82.1% |
GPQA Diamond Graduate-level reasoning | 81.2% | 80.6% |
Cached Input Price Prompt caching discount per 1M tokens | $5.00 / 1M | $0.10 / 1M |
Qui gagne où ?
At-a-glance decision frameworkScores de Benchmarks Vérifiés
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
Latence et Temps de Réponse
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Simulateur Interactif de Coût de Tokens
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
GPT-5.5 Pro · Strengths & Key Advantages
- le plus élevé précision OpenAI offre dans this génération
- exceptionnel sur adversarial et périphérie-case raisonnement
- le plus élevé verified précision OpenAI publishes pour this génération
Considerations & Trade-offs
- Extremely expensive et slow
- seulement rational pour un petit number d'élevé-valeur tâches
GPT-6 Sol · Strengths & Key Advantages
- Roughly 50% cheaper que GPT-5.6 Sol
- Error rate close à half du previous génération
- solide codage agentique et professionnel flux de travail
- Roughly half le prix de GPT-5.6 Sol avec meilleur error rates
Considerations & Trade-offs
- Weaker que GPT-6 Astra sur le hardest tâches
- Sits close dans prix à GPT-6.1 Sol, which est stronger
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | GPT-5.5 Pro | GPT-6 Sol |
|---|---|---|
Cost per Task Estimated USD to finish one task | $66.50 | $2.00 |
Output Tokens / Task Tokens generated per task | 78K | 62K |
Reasoning Tokens / Task Thinking tokens burned per task | 52K | 36K |
Spécifications Techniques
Architecture, release timeline, capabilities, and modalities.
| Caractéristique | GPT-5.5 Pro | GPT-6 Sol |
|---|---|---|
| Official API Model ID (SDK) | gpt-5-5-pro | gpt-6-sol |
| API Protocol | OpenAI Responses API & Chat Completions v1 | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2026-04 | 2026-09 |
| Knowledge Cutoff | December 2025 | April 2026 |
| Architecture | Maximum-accuracy unified reasoning model | Cost-efficient frontier unified reasoning model |
| Parameters | Confidential | Confidential |
| Enterprise Rate Limits (RPM / TPM) | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 4,000,000 – 10,000,000 TPM | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 4,000,000 – 10,000,000 TPM |
| Long-Context Tier (>128K/200K) | Flat rate ($50/1M in) across full 1050K window | Flat rate ($2/1M in) across full 1000K window |
| Prompt Cache Policy & TTL | Automatic prefix caching at $5/1M (no extra cache-write fee) | Automatic prefix caching at $0.1/1M (no extra cache-write fee) |
| Computer Use / GUI Agent | Supported (Screen coordinate grounding, browser & desktop GUI action loops) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Native Web Search tool + Hosted Code Interpreter & File Search RAG | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) |
| Multimodal Token Billing | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) |
| Quantization & Min GPU VRAM | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) |
| Safety & Frontier Classification | OpenAI Preparedness Framework Audited & System Card Published | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text, vision | text, vision |
| Output Modalities | text | text |
GPT-5.5 Pro vs GPT-6 Sol: Réponses Rapides (FAQ)
Which is more intelligent, GPT-5.5 Pro or GPT-6 Sol?
GPT-6 Sol is more intelligent. It scores 93 compared with 87 on the composite Intelligence Index.
Which model is faster?
GPT-6 Sol is faster, generating 116 tokens per second compared with 42 tokens per second.
Which model is cheaper to run?
GPT-6 Sol is cheaper at $1.47 per 1M tokens blended, compared with $43.50 (7:2:1 cache:input:output ratio).
Which model has lower latency?
GPT-6 Sol has lower latency, with a time to first token of 1.16s compared with 4.80s.
Which model has a larger context window?
GPT-5.5 Pro has a larger context window, supporting 1.05M tokens compared with 1M tokens.
Verdict
Choose GPT-5.5 Pro for final-pass vérification sur le le plus élevé-stakes deliverables, or choose GPT-6 Sol for coût-sensitive de pointe travail et codage agentique.
Questions fréquentes
Which is cheaper: GPT-5.5 Pro or GPT-6 Sol?+
GPT-5.5 Pro costs $50/1M input and $300/1M output tokens, while GPT-6 Sol costs $2/1M input and $10/1M output tokens.
Which model has a larger context window: GPT-5.5 Pro or GPT-6 Sol?+
GPT-5.5 Pro supports 1.1M tokens whereas GPT-6 Sol supports 1M tokens.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
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Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.
Sources: OpenAI & OpenAI Official Documentation