Terminal-Bench 4.0
codex0.149.1
Reasoning effort max
Tested model identity
GPT-5.6 Solopenai/gpt-5.6-solPass rate37.27%
95% CI 33.49%–41.05%
n = 330Checked
openaiListed Jul 9, 2026
OpenAI: GPT-5.6 Sol
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...
Context window1.1M
Max output128K
Provider endpoints9
Benchmark results0
Agent runs1
Measured performance
All leaderboards ↗Benchmark results
No published results in this index yet
Scores appear here when an evaluation matches this exact model.
Model + harness
All agent results ↗Agent runs
codex
Access & cost
18 quotesPrices across providers
Your token mix
USD · listed token ratesOpenRouter
Catalog quote- Input
- $4.00
- Output
- $20.00
- Cached input
- $0.40
Experiential
Standard · fewer than 272,001 input tokens
- Input
- $4.00
- Output
- $20.00
- Cached input
- $0.40
Catalog list rate. Plan allowances and temporary discounts are separate.
Experiential
At least 272,001 input tokens
- Input
- $8.00
- Output
- $30.00
- Cached input
- $0.80
Catalog list rate. Plan allowances and temporary discounts are separate.
Experiential
Flex service tier
- Input
- $2.00
- Output
- $10.00
- Cached input
- $0.20
Catalog list rate. Plan allowances and temporary discounts are separate.
- Input
- $2.00
- Output
- $10.00
- Cached input
- $0.20
Max prompt 922000 tokens · Cache write $2.5/M tokens · Web search $0.01/search
OpenAI
via OpenRouteropenai/flex · tier=flex · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $4.00
- Output
- $15.00
- Cached input
- $0.40
Max prompt 922000 tokens · Cache write $5/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $4.00
- Output
- $20.00
- Cached input
- $0.40
Max prompt 922000 tokens · Cache write $5/M tokens · Web search $0.01/search
- Input
- $8.00
- Output
- $30.00
- Cached input
- $0.80
Max prompt 922000 tokens · Cache write $10/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $4.00
- Output
- $20.00
- Cached input
- $0.40
Max prompt 922000 tokens · Cache write $5/M tokens · Web search $0.01/search
- Input
- $8.00
- Output
- $30.00
- Cached input
- $0.80
Max prompt 922000 tokens · Cache write $10/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $4.40
- Output
- $22.00
- Cached input
- $0.44
Cache write $5.5/M tokens · Web search $0.01/search
- Input
- $8.80
- Output
- $33.00
- Cached input
- $0.88
Cache write $11/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $4.40
- Output
- $22.00
- Cached input
- $0.44
Max prompt 922000 tokens · Cache write $5.5/M tokens · Web search $0.01/search
Amazon Bedrock
via OpenRouteramazon-bedrock/us-east-1 · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $8.80
- Output
- $33.00
- Cached input
- $0.88
Max prompt 922000 tokens · Cache write $11/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $4.40
- Output
- $22.00
- Cached input
- $0.44
Cache write $5.5/M tokens · Web search $0.01/search
- Input
- $8.80
- Output
- $33.00
- Cached input
- $0.88
Cache write $11/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $8.00
- Output
- $40.00
- Cached input
- $0.80
Max prompt 922000 tokens · Cache write $10/M tokens · Web search $0.01/search
OpenAI
via OpenRouteropenai/fast · tier=priority · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $16.00
- Output
- $60.00
- Cached input
- $1.60
Max prompt 922000 tokens · Cache write $20/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
Model specifications
- Developer
- openai
- Modality
- Language
- Context
- 1,050,000 tokens
- Maximum output
- 128,000 tokens
- Weights
- Not reported
- Provider listed
- Jul 9, 2026
- First discovered
- Oct 16, 2026
Exact identities
- openrouter
openai/gpt-5.6-sol - experiential
gpt-5.6-sol
Sources
Updated Oct 18, 2026
More from openai
View all ↗openaiListed 18 days ago
OpenAI: GPT-6.1 Sol Pro
GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Cost note: pro mode spends far more...
1.1M contextImage inputTool callingNo reported score
No reported score
$1.00in$5.00out/ 1M tokens · USDOpenAI · via OpenRouter · 8 endpointsopenai/flex · tier=flex · prompt ≤ 272000 tokens
openaiListed 18 days ago
OpenAI: GPT-6.1 Sol Pro (batch)
GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Cost note: pro mode spends far more...
1.1M contextImage inputTool callingNo reported score
No reported score
$1.00in$5.00out/ 1M tokens · USDOpenAI · via OpenRouter · 2 endpointsopenai · prompt ≤ 272000 tokens
openaiListed 18 days ago
OpenAI: GPT-6.1 Sol (batch)
GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional...
1.1M contextImage inputTool callingNo reported score
No reported score
$1.00in$5.00out/ 1M tokens · USDOpenAI · via OpenRouter · 2 endpointsopenai · prompt ≤ 272000 tokens
openaiReleased 19 days ago
OpenAI: GPT-6.1 Sol
Requires Responses API for tools; offers Ultrafast inference with US or EU data residency.
1.1M contextImage inputTool calling
AA IntelligenceEffort: max · Max51.83LiveBenchEffort: max · single run · equal mean of 7 suites85.41%
$1.00in$5.00out/ 1M tokens · USDOpenAI · via OpenRouter · 10 endpointsopenai/flex · tier=flex · prompt ≤ 272000 tokens