Model trackerAll models and earlier releases
OpenAI · launched 29 Sept 2026
GPT-6.1 Sol
An upgrade to GPT-6 Sol for coding, professional work and computer use, with cached input priced 50% lower.
Read the official announcementModel details
- Vendor
- OpenAI
- Launch date
- 29 Sept 2026
- Input price
- $2.00 / 1M tokens
- Output price
- $10 / 1M tokens
- Cached input
- $0.10 / 1M tokens
- Batch discount
- 50%
- Context window
- 1.05M tokens
- Max output
- 128K tokens
- Input types
- Text, Image, File
- API model ID
- gpt-6.1-sol
- OpenRouter ID
- openai/gpt-6.1-sol
Listed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.20 and output $15 per million tokens for the full request.
Compared with GPT-6 Sol
Input price
$2.00
was $2.00 · Same price
Output price
$10
was $10 · Same price
Blended price
$4.00
was $4.00 · Same price
Listed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.20 and output $15 per million tokens for the full request.
Best published results
- DeepSWE v1.1high effort · $0.65 per task · reported by OpenAI75.22%
- GDP.pdfhigh effort · $0.35 per task · reported by OpenAI32%
- AutomationBench 1.0.6max effort · $0.30 per task · reported by OpenAI36.1%
- OSWorld 2.0 (offline set)max effort · $1.27 per task · reported by OpenAI71.42%
- Terminal-Bench Science 0.1max effort · $5.47 per task · reported by OpenAI57.02%
- Factual error rate on difficult prompts(lower is better)xhigh effort · $0.10 per task · reported by OpenAI4.12%
Price compared with other models
| Model | Launched | Input / 1M | Output / 1M | Cached / 1M | Blended / 1M | vs GPT-6.1 Sol |
|---|---|---|---|---|---|---|
| Claude Haiku 5.5AnthropicListed prices and comparisons apply to prompts up to 100K tokens. Above 100K, input costs $0.50, output $2.50 and cache reads $0.05 per million tokens. | 7 Oct 2026 | $0.10 | $0.50 | $0.01 | $0.20 | 95% cheaper |
| GPT-6 LunaOpenAI | 22 Sept 2026 | $0.10 | $0.50 | $0.01 | $0.20 | 95% cheaper |
| GPT-5.6 LunaOpenAI | 9 Jul 2026 | $0.20 | $1.20 | $0.02 | $0.45 | 89% cheaper |
| Claude Haiku 4.5Anthropic | 15 Oct 2025 | $1.00 | $5.00 | $0.10 | $2.00 | 50% cheaper |
| Claude Sonnet 5Anthropic | 30 Jun 2026 | $2.00 | $10 | $0.20 | $4.00 | Same price |
| Claude Sonnet 5.5AnthropicCache reads were reduced from $0.20 to $0.10 per million tokens on 7 October 2026. | 28 Sept 2026 | $2.00 | $10 | $0.10 | $4.00 | Same price |
| GPT-6 SolOpenAI · previous generationListed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.40 and output $15 per million tokens for the full request. | 22 Sept 2026 | $2.00 | $10 | $0.20 | $4.00 | Same price |
| GPT-6.1 SolOpenAIListed rates apply up to 272K input tokens. Above 272K, input costs $4, cached input $0.20 and output $15 per million tokens for the full request. | 29 Sept 2026 | $2.00 | $10 | $0.10 | $4.00 | Baseline |
| Claude Opus 5.5Anthropic | 22 Sept 2026 | $4.00 | $20 | $0.20 | $8.00 | 2× the price |
| GPT-5.6 SolOpenAIPrice before the GPT-6 launch, from OpenAI's announcement. OpenRouter now lists $2 / $10. | 9 Jul 2026 | $4.00 | $20 | – | $8.00 | 2× the price |
| Claude Opus 5Anthropic | 24 Jul 2026 | $5.00 | $25 | $0.50 | $10 | 2.5× the price |
| Claude Fable 5Anthropic | 9 Jun 2026 | $10 | $50 | $1.00 | $20 | 5× the price |
| Claude Fable 5.1Anthropic | 1 Sept 2026 | $10 | $50 | $0.25 | $20 | 5× the price |
| GPT-6 AstraOpenAI | 4 Sept 2026 | $10 | $50 | $1.00 | $20 | 5× the price |
GPT-6.1 Sol and GPT-6 Sol rates were checked on 8 October 2026 against OpenAI model documentation. USD per million tokens, checked 2 Oct 2026 via OpenRouter. Comparison uses the blended price (3 input tokens for every output token). Haiku 5.5 and Sonnet 5.5 prices were updated from Anthropic's 7 October 2026 announcement.
Official benchmark results
GPT-6.1 Sol safety evaluations
Reported by OpenAI on 29 Sept 2026 · exact values
| Benchmark | GPT-6.1 Sol | GPT-6 Sol | GPT-6 Astra | GPT-6 Luna |
|---|---|---|---|---|
| Failure to disclose a broken search toolSafety evaluation · Max effort | 2.1% | 4.92% | 1.5% | 28.67% |
| Reviewer bypass attemptsSafety evaluation · Max effort | 0% | 0% | 0% | 0.26% |
| Warning circumventionSafety evaluation · Max effort | 23.48% | 64.39% | 17.42% | 42.37% |
| Computer-use safety stress testSafety evaluation · Xhigh effort | 4.32% | 17.39% | 2.4% | 13.7% |
- Bold marks the best reported score in each row.
- All rates are lower-is-better. These targeted evaluations stress challenging scenarios and do not represent typical usage.
- Exact values from the embedded announcement chart data. No cost values were published for these evaluations.
DeepSWE v1.1
Score against cost · reported by OpenAI on 29 Sept 2026 · exact values
Agentic software engineering performance across reasoning effort settings.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
Show data table
| Model | Effort | Score (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 64.38% | $0.17 |
| GPT-6.1 Sol | medium | 73.01% | $0.42 |
| GPT-6.1 Sol | high | 75.22% | $0.65 |
| GPT-6.1 Sol | xhigh | 71.9% | $0.79 |
| GPT-6.1 Sol | max | 71.9% | $1.57 |
| GPT-6 Sol | low | 37.17% | $0.16 |
| GPT-6 Sol | medium | 56.64% | $0.38 |
| GPT-6 Sol | high | 65.27% | $0.64 |
| GPT-6 Sol | xhigh | 66.59% | $1.00 |
| GPT-6 Sol | max | 68.81% | $2.74 |
| GPT-6 Astra | low | 67.04% | $1.60 |
| GPT-6 Astra | medium | 72.79% | $3.08 |
| GPT-6 Astra | high | 73.23% | $3.92 |
| GPT-6 Astra | xhigh | 74.12% | $4.43 |
| GPT-6 Astra | max | 73.23% | $7.50 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
GDP.pdf
Score against cost · reported by OpenAI on 29 Sept 2026 · exact values
Accuracy on professional questions using complex PDF documents.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
- Claude Opus 5.5 with fallbacks
Show data table
| Model | Effort | Score (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 27% | $0.33 |
| GPT-6.1 Sol | medium | 30% | $0.34 |
| GPT-6.1 Sol | high | 32% | $0.35 |
| GPT-6.1 Sol | xhigh | 31.8% | $0.37 |
| GPT-6.1 Sol | max | 31% | $0.42 |
| GPT-6 Sol | low | 21.8% | $0.33 |
| GPT-6 Sol | medium | 25.4% | $0.34 |
| GPT-6 Sol | high | 28% | $0.35 |
| GPT-6 Sol | xhigh | 23.8% | $0.37 |
| GPT-6 Sol | max | 24.8% | $0.43 |
| GPT-6 Astra | low | 30.4% | $1.70 |
| GPT-6 Astra | medium | 30.4% | $1.72 |
| GPT-6 Astra | high | 31% | $1.79 |
| GPT-6 Astra | xhigh | 32.2% | $1.91 |
| GPT-6 Astra | max | 31% | $2.08 |
| Claude Opus 5.5 with fallbacks | low | 25.6% | $0.76 |
| Claude Opus 5.5 with fallbacks | medium | 25.6% | $0.80 |
| Claude Opus 5.5 with fallbacks | high | 28.8% | $0.83 |
| Claude Opus 5.5 with fallbacks | xhigh | 26.6% | $0.96 |
| Claude Opus 5.5 with fallbacks | max | 26.2% | $1.55 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
- Opus 5.5 results use fallback models as reported by OpenAI; these are not standalone Opus 5.5 results.
AutomationBench 1.0.6
Score against cost · reported by OpenAI on 29 Sept 2026 · exact values
End-to-end business workflows using 47 tools across sales, marketing, operations, support, finance and HR.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
- Claude Opus 5.5 with fallbacks
- Claude Fable 5.1 with Opus 5 fallback
Show data table
| Model | Effort | Score (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 24.7% | $0.16 |
| GPT-6.1 Sol | medium | 31.7% | $0.19 |
| GPT-6.1 Sol | high | 33.2% | $0.23 |
| GPT-6.1 Sol | xhigh | 35.5% | $0.25 |
| GPT-6.1 Sol | max | 36.1% | $0.30 |
| GPT-6 Sol | low | 21.16% | $0.19 |
| GPT-6 Sol | medium | 26.94% | $0.21 |
| GPT-6 Sol | high | 31.2% | $0.24 |
| GPT-6 Sol | xhigh | 33.18% | $0.27 |
| GPT-6 Sol | max | 31.96% | $0.34 |
| GPT-6 Astra | low | 30.3% | $1.08 |
| GPT-6 Astra | medium | 34.1% | $1.27 |
| GPT-6 Astra | high | 37.1% | $1.44 |
| GPT-6 Astra | xhigh | 39% | $1.50 |
| GPT-6 Astra | max | 41.4% | $1.73 |
| Claude Opus 5.5 with fallbacks | low | 24.2% | $0.51 |
| Claude Opus 5.5 with fallbacks | medium | 29.53% | $0.65 |
| Claude Opus 5.5 with fallbacks | high | 33.03% | $0.71 |
| Claude Opus 5.5 with fallbacks | xhigh | 35.77% | $0.89 |
| Claude Opus 5.5 with fallbacks | max | 42.47% | $1.44 |
| Claude Fable 5.1 with Opus 5 fallback | max | 31.4% | $2.45 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
- Opus 5.5 results use fallback models as reported by OpenAI; these are not standalone Opus 5.5 results.
- Fable 5.1 is reported at max effort only. Its cost omits fallbacks, which occurred on approximately 40% of tasks, so its actual cost is higher.
OSWorld 2.0 (offline set)
Score against cost · reported by OpenAI on 29 Sept 2026 · exact values
Partial reward on long-horizon computer-use workflows, using the offline set from release v2026.08.08.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
Show data table
| Model | Effort | Score (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 58.96% | $0.42 |
| GPT-6.1 Sol | medium | 66.84% | $0.77 |
| GPT-6.1 Sol | high | 69.56% | $0.96 |
| GPT-6.1 Sol | xhigh | 69.38% | $1.05 |
| GPT-6.1 Sol | max | 71.42% | $1.27 |
| GPT-6 Sol | low | 43.9% | $1.01 |
| GPT-6 Sol | medium | 54% | $1.38 |
| GPT-6 Sol | high | 58.29% | $1.71 |
| GPT-6 Sol | xhigh | 60.54% | $2.30 |
| GPT-6 Sol | max | 64.43% | $3.37 |
| GPT-6 Astra | low | 62.17% | $2.72 |
| GPT-6 Astra | medium | 69.25% | $5.36 |
| GPT-6 Astra | high | 70.02% | $6.91 |
| GPT-6 Astra | xhigh | 71.27% | $7.49 |
| GPT-6 Astra | max | 73.49% | $9.44 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
Terminal-Bench Science 0.1
Score against cost · reported by OpenAI on 29 Sept 2026 · exact values
Scientific research tasks completed through a terminal.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
- Claude Opus 5.5 with fallbacks
Show data table
| Model | Effort | Score (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 43.71% | $1.79 |
| GPT-6.1 Sol | medium | 47.56% | $2.34 |
| GPT-6.1 Sol | high | 51.14% | $2.76 |
| GPT-6.1 Sol | xhigh | 53.71% | $2.89 |
| GPT-6.1 Sol | max | 57.02% | $5.47 |
| GPT-6 Sol | low | 9.17% | $3.00 |
| GPT-6 Sol | medium | 14.49% | $4.41 |
| GPT-6 Sol | high | 14.61% | $4.63 |
| GPT-6 Sol | xhigh | 25.29% | $6.77 |
| GPT-6 Sol | max | 27.59% | $12.2 |
| GPT-6 Astra | low | 55.43% | $11.4 |
| GPT-6 Astra | medium | 57.43% | $12.3 |
| GPT-6 Astra | high | 62% | $15 |
| GPT-6 Astra | xhigh | 60.86% | $15.8 |
| GPT-6 Astra | max | 68.1% | $23.8 |
| Claude Opus 5.5 with fallbacks | max | 63.33% | $23.2 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
- Opus 5.5 results use fallback models as reported by OpenAI; these are not standalone Opus 5.5 results.
Factual error rate on difficult prompts
Error rate against cost · reported by OpenAI on 29 Sept 2026 · exact values
Answers containing at least one factual error on deliberately difficult prompts. Lower is better.
- GPT-6.1 Sol
- GPT-6 Sol
- GPT-6 Astra
Show data table
| Model | Effort | Answers with any factual error (%) | Cost per task |
|---|---|---|---|
| GPT-6.1 Sol | low | 7.72% | $0.045 |
| GPT-6.1 Sol | medium | 6.29% | $0.056 |
| GPT-6.1 Sol | high | 4.52% | $0.082 |
| GPT-6.1 Sol | xhigh | 4.12% | $0.10 |
| GPT-6.1 Sol | max | 4.61% | $0.13 |
| GPT-6 Sol | low | 11.42% | $0.05 |
| GPT-6 Sol | medium | 6.86% | $0.069 |
| GPT-6 Sol | high | 5.14% | $0.099 |
| GPT-6 Sol | xhigh | 4.52% | $0.13 |
| GPT-6 Sol | max | 4.57% | $0.18 |
| GPT-6 Astra | low | 6.26% | $0.24 |
| GPT-6 Astra | medium | 4.41% | $0.31 |
| GPT-6 Astra | high | 3.9% | $0.48 |
| GPT-6 Astra | xhigh | 3.99% | $0.60 |
| GPT-6 Astra | max | 3.91% | $0.79 |
- Exact score and cost values from the chart data embedded in OpenAI's announcement.
- Prompts are de-identified conversations where users flagged an earlier model error. They are not representative of typical usage.