GPT-6.1 Sol
$4.50per workload93.7% mean score
+3.5 pp · $18.00 less
Evaluated / snapshot 2026-09-29
anthropic
Claude Fable 5.1
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CAPABILITY & COST
What else is worth comparing?
Claude Fable 5.190.2% mean scoreFrontierMath tiers 1–3 · v2 · 2026-09-01
$22.501M input + 250k output tokens
Loading chartThis modelSelected alternativesOther dots: models with both score and price
GPT-6 Astra
$22.50per workload93.7% mean score
+3.5 pp · same cost
Evaluated / snapshot 2026-08-30
GPT-6 Sol
$4.50per workload89.8% mean score
-0.4 pp · $18.00 less
Evaluated / snapshot 2026-09-22
Same test and configuration; differences in point scores are not proof of a meaningful advantage. Nearby score does not mean equivalent capability.
Results in context
Where does it sit?
Five nearest ECI estimates · current snapshot, not release-time scores.
Loading chartOverlapping intervals do not establish a clear winner. ECI combines source-selected benchmarks; points are not percentages. Snapshot 2026-10-24.
Test by test
Loading chartFrontierMath tiers 1–3 · v2 · max · 2026-09-01 · 22 included resultsSimpleQA Verified · max · 2026-09-01 · 20 included resultsOTIS Mock AIME 2024–2025 · max · 2026-09-01 · 21 included results
Each row is a different test, not a common difficulty scale. “Max” does not mean equal compute across providers.
What changes your bill?
Illustrative token baskets, not measured tasks.
Loading chartShort exchange1K input + 250 output tokens$0.0225
Long answer4K input + 4K output tokens$0.24
Document analysis100K input + 2K output tokens$1.10
Repeated workload1M input + 250K output tokens$22.50
List prices, captured 2026-10-25. Excludes caching, batch discounts, tools and retries. Token baskets are not estimates of a specific task’s token use.
Within the same developer
Five lowest listed workload costs, plus this model.
Loading chartFixed basket: 1M input + 250k output. Logarithmic positions; labels show actual USD. Lower cost does not imply equivalent capability.
PUBLISHED LIMITSRoom to read
Room to read
Room to respond
Context and maximum output are separate limits, not a quality score. They are not added together.
Context window1Mtokens
Maximum output128Ktokens
Published specifications
Context window1Mtokens
API input price$10USD / million tokens
API output price$50USD / million tokens
Maximum output128Kmaximum tokens per response
Output modalitiestextpublished output types
Supported parameters11API parameters listed
Model information
- Provider
- anthropic
- Input modalities
- text, image, file
- Output modalities
- text
- Maximum output
- 128,000 tokens
- Supported parameters
- include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, tool_choice, tools, verbosity
- Added to catalogue
- 2026-09-01
- Knowledge cutoff
- Not available
- Catalogue snapshot
- 2026-10-25
- Source
- OpenRouter Models API ↗
Prices are per million tokens. The workload estimate uses 1,000 input and 250 output tokens. Context describes request capacity, not model quality.
