Efficient proprietary dense model from OpenAI, the cost-optimized sibling of GPT-5.6 Sol. Same 1,050,000-token context and 128K max output as Sol. Text + image in, text out. Reasoning effort spans none through max; medium is default.
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Pricing: $0.20/1M input, $1.20/1M output.
Agents on Rails benchmark (Aug 2026, Le Mans round). 73.0% accuracy on 63 runs at default effort for only $0.014 mean cost - the cheapest run in the 16-model field by a wide margin. Scaling reasoning effort lifted it to 86% at $1.36 (high) and 89% at $2.34 (xhigh) in the earlier 8-model round. The headline finding still holds: “a dollar gets you most of the way.”
AI-generated content marks
The provider reports that this model does not add embedded watermarks or provenance metadata to generated output.
Provider transparency docs →
coding
reasoning
agentic
- Context
- 1050k
- License
- proprietary
- Origin
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🇺🇸
USA
- Released
- Aug 2026
Or run it in the cloud
Live per-provider pricing, throughput and uptime - refreshed 2 months ago via OpenRouter. Click a column to sort.
some pricing may be stale - last verified 2026-08-15
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Provider
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Type
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Input $/M
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Output $/M
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Cache $/M
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Tok/s
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Latency
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Uptime
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Value
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API
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0.20 |
1.20 |
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cheapest
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API
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0.20 |
1.20 |
0.020 |
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- |
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Sub
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- |
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$10.00/mo
Go ($5 first month)
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Default order: throughput among 95%+ uptime providers, then latency; subscriptions last. Sort by any column. Subscription rows show $/mo in the Value column - per-token columns are "-". Affiliate links are marked sponsored / nofollow. Confirm current pricing on the provider's site before committing.
PRICE HISTORY
Inference cost over time
Data accumulates from the first daily sync - longer ranges populate over time. Prices come from OpenRouter snapshots, not a historical API.
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