GPT-6.1 Sol
- Family
- GPT-6.1
- Released
- 2026-09-29
- Context
- 1.05M
- Max output
- 128K
- Knowledge cutoff
- 2026-04
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
Cheapest of 3 routes · Azure OpenAI · cache read $0.100
About
OpenAI GPT-6.1 Sol (API id gpt-6.1-sol), announced September 29, 2026, upgrades GPT-6 Sol toward near-Astra intelligence for complex coding, computer use, and professional work at one-fifth of Astra's standard input/output token prices. First-party docs: 1,050,000 context, 128,000 max output, knowledge cutoff Apr 30, 2026, text+image input to text output. Standard short-context list $2 input / $0.10 cached input / $2.50 cache writes / $10 output per 1M tokens (cached input 50% below GPT-6 Sol's $0.20). >272K input: 2x input/cache and 1.5x output. Batch/Flex 50% of Standard; Fast mode 2x. reasoning.effort low/medium/high/xhigh/max (none/minimal not supported).
Providers(3)
Compare all 3Compare API pricing across 3 tracked provider routes for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Batch in / out | Cache | Route |
|---|---|---|---|---|---|
| Azure OpenAI | $2.00 | $10.00 | - | read $0.100 | Serverless |
| OpenAI API | $2.00 | $10.00 | $1.00 / $5.00 | read $0.100 | Serverless |
| OpenRouter | $2.00 | $10.00 | $1.00 / $5.00 | read $0.100 | Serverless |
Available via routers & gateways(16)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Azure AI Foundry Model Router
RouterMicrosoft Azure AI Foundry's native model router that uses a trained ML model to route each prompt in real time to the optimal Azure-hosted model, with Balanced/Cost/Quality mode selection and automatic failover.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(4)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| ARC-AGI-2 | 94.2 | ARC-AGI-2 semi-privateObserved 2026-10-01 | Configuration: gpt-6.1-sol (Max) Harness: ARC Prize semi-private evaluation Evaluator: ARC Prize Foundation Confidence: confirmed Notes: ARC Prize official leaderboard data (ARC-AGI-2 semi-private), verified in https://arcprize.org/media/data/leaderboard/v2.json (generatedAt 2026-10-01T18:51Z) for modelDisplayName 'GPT-6.1 Sol (Max)'. Highest-scoring published effort selected. Discovered via Benchmark Heaven / Epoch AI mirror (lead only). | Source |
| FrontierCode 1.1 Main | 50.2 | FrontierCode 1.1 MainObserved 2026-10-05 | Configuration: gpt-6.1-sol (Medium) Harness: codex Evaluator: Cognition Confidence: confirmed Notes: Cognition FrontierCode 1.1 Main (100 tasks) mean@5 composite ('new_score'), verified in https://cognition.com/data/frontiercode-leaderboard/data.json (the data file behind https://cognition.com/frontiercode), retrieved 2026-10-05. Agent harness: codex. Highest-scoring published effort selected; timestamp is retrieval date. | Source |
| FrontierMath Tier 4 | 100.0 | FrontierMath Tier 4 v2 (private)Observed 2026-09-29 | Configuration: gpt-6.1-sol (Max) Harness: Epoch AI FrontierMath Tier 4 v2 private set Evaluator: Epoch AI Confidence: confirmed Notes: Epoch AI-run evaluation (evaluator of record), from Epoch AI Benchmarking Hub data download https://epoch.ai/data/benchmark_data.zip (file frontiermath_tier_4_v2.csv, row 'gpt-6.1-sol_max', run started 2026-09-29). Epoch data is CC BY 4.0: credit 'Epoch AI, Capabilities & benchmarking, https://epoch.ai/benchmarks'. Highest-scoring Epoch configuration for this model selected; other configurations exist in the same file. Discovered via Benchmark Heaven (lead only). | Source |
| Google-Proof Q&A | 95.4 | diamondObserved 2026-09-29 | Configuration: gpt-6.1-sol (Max) Harness: Epoch AI Inspect harness (GPQA Diamond, 198 Q) Evaluator: Epoch AI Confidence: confirmed Notes: Epoch AI-run evaluation (evaluator of record), from Epoch AI Benchmarking Hub data download https://epoch.ai/data/benchmark_data.zip (file gpqa_diamond.csv, row 'gpt-6.1-sol_max', run started 2026-09-29). Epoch data is CC BY 4.0: credit 'Epoch AI, Capabilities & benchmarking, https://epoch.ai/benchmarks'. Highest-scoring Epoch configuration for this model selected; other configurations exist in the same file. Discovered via Benchmark Heaven (lead only). | Source |
Migration checks
No linked migration route is available for this model yet.
API versions
gpt-6.1-solGPT-6.1 SolGPT‑6.1 SolCheapest of 3 routes · Azure OpenAI · cache read $0.100